History of Modern Philosophy Part 8

Joseph Butler[1] (1692-1752; Sermons on Human Nature, 1726; cf. p. 194) maintains still more strictly than Hutcheson the immediateness both of the affections and the moral estimation of them. He declares that even the self-regarding impulses as such are un-egoistic, and makes moral judgment leave out of view all consequences, either foreseen or present, whereas his predecessor had resolved the goodness of the action into its advantageous effects (not for the agent and the spectator, but for its object and) for society. The conscience-so Butler terms the moral sense-directly approves or disapproves characters and actions in themselves, no matter what good or ill they occasion in the world. We judge a mode of action good, not because it is useful to society, but because it corresponds to the demands of the conscience. This must be unconditionally obeyed, whatever be the issue. We must not act contrary to truth and justice, even if it should seem to bring about more happiness than misery.-Butler, too, furnishes material for the ethics of Hume, by his revival of the separation, previously defended by the Stoics, of desire and pa.s.sion from self-love or interest. Self-love desires a thing because it expects pleasure from it, but the natural impulses impel us toward their objects immediately, i. e., without a representation of the pleasure to be gained; and repet.i.tion is necessary before the artificial motive of egoistic pleasure-seeking can be added to the natural motive of inborn desire. Self-love always presupposes original, immediate affections.

[Footnote 1: Cf. Collins's Butler, Blackwood's Philosophical Cla.s.sics. 1881.-TR.]

The English moral science of the century is brought to a conclusion by Adam Smith[1] (1723-90), the celebrated founder of political economy.[2] Smith not only takes into consideration-like his greater friend, Hume-all the problems proposed by his predecessors, but, further (in his Theory of Moral Sentiments, 1759, published while he was professor at Glasgow), combines the various attempts at their solution, not by eclectic co-ordination but by working them over for himself, and arranges them on a uniform principle, thus accomplis.h.i.+ng a work which has not yet received due recognition beyond the limits of his native land. He reached this comprehensive moral principle by recognizing the full bearing of a thought which Hume had incidentally expressed, that moral judgment depends on partic.i.p.ation in the feelings of the agent, and by following out with fine psychological observation this sympathy of men into its first and last manifestations. In this way a twofold kind of morality was revealed to him: mere propriety of behavior and real merit in action. On the one hand, that is, the sympathy of the spectator-as Hume has one-sidedly emphasized-is directed to the utility of the consequences (or to the "merit") of the action, and, on the other, to the fitness of the motives (or their "propriety"). An action is proper when the impartial spectator is able to sympathize with its motive, and meritorious if he can sympathize also with its end or effect; i.e., if, in the first case, the feelings are suitable to their objects (neither too strong nor too weak), and, in the second case, the consequences of the act are advantageous to others. Merit = propriety + utility. The main conclusion is this: Sympathy is that by means of which virtue is recognized and approved, as well as that which is approved as virtue; it is ratio cognoscendi as well as ratio essendi, the criterion as well as the source of morality. Thus Smith endeavors to solve the two princ.i.p.al problems of English ethics-the criterion and the origin of virtue-with a common answer.

[Footnote 1: Cf. Farrer's Adam Smith, English Philosophers Series, 1880.-TR.]

[Footnote 2: The epoch-making work, with which he called economic science into existence, The Wealth of Nations appeared in 1776. Cf. Wilhelm Ha.s.sbach, Untersuchungen uber Adam Smith, Leipsic, 1891.]

"Sympathy" denotes primarily nothing more than the innate and purely formal power of imitating to a certain degree the feelings of others. From this modest germ is developed by a progressive growth the wide-spreading tree of morality: moral judgment, the moral imperative with its religious sanction, and ethical character. Accordingly we may distinguish different stages in the development of sympathy-the psychological stage of mere fellow-feeling, the aesthetic stage of moral appreciation, the imperative stage of moral precepts, which further on are construed as commands of G.o.d (the famous Kantian definition of religion was announced in Glasgow a generation earlier than in Konigsberg), finally, the concluding stage wherein these laws of duty are taken up into the disposition. Besides these, there results from the mechanism of the sympathetic feelings a series of phenomena, which, although they do not entirely conform to the ethical standard, yet exercise a salutary effect on the permanence of society; e.g., our exceptional judgment of the deeds of the great, the rich, and the fortunate, as also the higher worth ascribed to good (and, conversely, the greater guilt to bad) intentions when successfully carried out into action, in comparison with those which fall short of their result.

The first, the purely psychological stage, includes three cases. The spectator sympathizes (1) with the feelings of the agent; (2) with the grat.i.tude or anger of the person affected by the action; (3) the person observed sympathizes in return with the imitative and judging feelings of the spectator.

The fundamental laws of sympathy are as follows: We are roused to imitate the feeling of another by the perception either of its signs (its natural consequences or its natural expression in visible and audible motions), or of its causes (the circ.u.mstances and experiences which occasion it), the latter exercising a more potent influence than the former. The wooden leg of the beggar is more effective in exciting our pity than his anxious air; the sight of dental instruments is more eloquent than the plaints of the sufferer from toothache. In order to be able to imitate vividly the feelings of a person, we must know the causes of them.-The feeling of the spectator is, on the average, less intense than that of the person observed, so long as the latter does not control and repress his emotions in view of the calmness of the former. The difference of intensity between the original and the sympathetic feelings differs widely with the various cla.s.ses of emotions. It is difficult to take part in feelings which arise from bodily conditions, but easy to share those in the production of which the imagination is concerned-hence easier to share in hope and fear than in pleasure and pain.-We sympathize more readily with feelings which are agreeable to the observer, the observed, and other partic.i.p.ants than with such as are not so; more willingly, therefore, with cheerfulness, love, benevolence than with grief, hatred, malevolence. This is not only true of temporary affections, but especially of those general dispositions which depend on a more or less happy situation in life; we sympathize more vividly with the fortunes of the rich and n.o.ble, because we consider them happier than the poor and lowly. Wealth and high rank are objects of general desire chiefly because their possessor enjoys the advantage of knowing that whatever gives him joy or sorrow always arouses similar feelings in countless other men. The root of all ambition is the wish to rule over the hearts of our fellows by compelling them to make our feelings their own; the central nerve of all happiness consists in seeing our own sensations shared by those about us and reflected back, as it were, from manifold mirrors. Small annoyances often have a diverting effect on the spectator; great success easily excites his envy; great sorrows and minor joys, on the contrary, are always sure of our sympathy. Hence the morose man, to whom everything is an occasion of ill-humor, is nowhere welcome, and the man of cheerful disposition, who rejoices in each little event and whose good spirits are contagious, everywhere.

Not less admirable than the fine gift of observation which guides Smith in his discovery of the primary manifestations and the laws of sympathy is the skill with which he deduces moral phenomena, from the simplest to the most complex-moral judgment, the moral law, its application to one's own conduct, the conscience-from the interchange of sympathetic feelings. From involuntary comparison of the representative feeling of the spectator with its original in the person observed arises an agreeable or disagreeable feeling of judgment, a judgment of value, approbating or rejecting the latter. This is approving when the intensity of the original harmonizes with that of the copy, disapproving when the former exceeds or fails to attain the latter. In the one case the emotion is judged suitable to the object which causes it; in the other, too violent or too weak. It is always a certain mean of pa.s.sion which, as "proper," receives approval (esteem, love, or admiration). In the case of the social pa.s.sions excess is more readily condoned, in the case of the unsocial and selfish ones, defect; hence we judge the over-sensitive more leniently than the over-vengeful. Anger must be well-grounded and must express itself with great moderation to arouse in the spectator a like degree of sympathetic resentment. For here the sympathy of the spectator is divided between two parties, and fellow-feeling with the angry one is weakened by fear for the person menaced by him, whereas, in the case of kind affections, sympathy is increased by doubling. While our judgment of propriety or decorum rests on simple partic.i.p.ation in the sentiments of the agent, our judgment of merit and demerit is based, in addition, on sympathy with the feelings of grat.i.tude or resentment experienced by the person on whom the action terminates. An act is meritorious if it appears to us to deserve thanks and reward, ill-deserving if it seems to merit resentment and punishment. Nature has inscribed on the heart, apart from all reflection on the utility of punishment, an independent, immediate, and instinctive approbation of the sacred law of retribution. This is the point at which a hitherto purely contemplative sympathy pa.s.ses over into an active impulse, which prepares us to support the victim of attack and insult in his defense and revenge.

This partic.i.p.ation in the circ.u.mstances and feelings of others is a reciprocal phenomenon. The spectator takes pains to share the sentiments of the person observed; and the latter, on his part, endeavors to reduce the emotions which move him to a degree which will render partic.i.p.ation in them possible for the former. In these reciprocal efforts we have the beginnings of the two cla.s.ses of virtues-the gentle, amiable virtues of sympathy and sensibility, and the exalted, estimable virtues of self-denial and self-command. Both of these conditions of mind, however, are considered virtues only when they are manifested in unusual intensity: humanity is a remarkably delicate fellow-feeling, greatness of soul a rare degree of self-command. (The consideration for those about one which is ethically demanded is given, moreover, to a certain extent involuntarily. The man in trouble and the merry man alike restrain themselves in the company of persons who are indifferent, or in an opposite mood, while they give rein to their emotions when with those similarly affected. Joy is enhanced by sympathy, and grief mitigated.) Thus the perfection of human nature and the divinely willed harmony among the feelings of men are dependent on every man feeling little for himself and much for others; on his holding his selfish inclinations in check and giving free course to his benevolent ones. This is the injunction of Christianity as well as of nature. And as, on the one hand, the content of the moral law is thus deduced from sympathy, so, on the other, this yields the formal criterion of good: Look upon thy sentiments and actions in the light in which the impartial spectator would see them. Conscience is the spectator taken up into our own breast. It remains to consider the origin of this third, imperative stage.

From daily experience of the fact that we judge the conduct of others, and they ours, and from the wish to gain their approval, arises the habit of subjecting our own actions to criticism. We learn to look at ourselves through the eyes of others, we a.s.sign the spectator and judge a place in our own heart, we make his calm objective judgment our own, and hear the man within calling to us: Thou art responsible for thy acts and intentions. In this way we are placed in a position to overcome two great delusions, one of pa.s.sion, which overestimates the present at the expense of the future, and one of self-love, which overestimates the individual at the expense of other men; delusions from which the impartial spectator is free, for the pleasure of the moment seems to him no more desirable than pleasure to come, and one person is just the same to him as another. Through comparison of like cases in the exercise of self-examination certain rules or principles are formed concerning what is right and good. Reverence for these general rules of living is called the sense of duty. The last step in the process consists in our enhancement of the binding authority of moral rules by looking on them as commands of G.o.d. Here Smith adds subtle discussions of the question, in what cases actions ought to be done simply out of regard for these abstract maxims, and in what others we welcome the co-operation of a natural impulse or pa.s.sion. We ought to be angry and to punish with reluctance, merely because reason enjoins it, but, on the other hand, we should be benevolent and grateful from affection; she is not a model wife who performs her duties merely from a sense of duty, and not from inclination also. Further, in all cases where the rules cannot be formulated with perfect exactness and definiteness (as they can in the case of justice), and are not absolutely valid without exception, reverence for them must be a.s.sisted by a natural taste for modifying and supplementing the general maxims to suit particular instances.

In this sketch of the course of Smith's moral philosophy much that is fine and much that is of importance has of necessity been pa.s.sed over-his excellent a.n.a.lysis of the relations of benevolence and justice, and numerous descriptions of traits of character, e. g., his ingenious parallel between pride and vanity. We may briefly mention, in conclusion, his observations on the irregularities of moral judgment. Prosperity and success exert an influence on this, which, though hurtful to its purity, must, on the whole, be considered advantageous to mankind. Our lenience toward the defects of princes, the great, and the rich, and our over-praise for their excellent qualities are, from the moral standpoint, an injustice, but one which has this advantage, that it encourages ambition and industry, and maintains social distinctions intact, which without loyalty and respect toward superiors would be broken down. For most men the road to fortune coincides with the path to virtue. Again, it is a beneficent provision of nature that we put a higher estimate on a successfully executed act of benevolence, and reward it more, than a kind intention which fails of execution; that we judge and punish the purposed crime which is not carried out more leniently than the one which is completed; that we even ascribe a certain degree of accountability to an unintentional act of good or evil-although in these cases the moralist is compelled to see an ethically unjustifiable corruption of the judgment by external success or failure beyond the control of the agent. The first of these irregularities does not allow the man of good intentions to content himself with n.o.ble desires merely, but spurs him on to greater endeavors to carry them out-man is created for action; the second protects us from the inquisitorial questioning of motives, for it is easy for the most innocent to fall under grave suspicion. To this inconsistency of feeling we owe the necessary legal principle that deeds only, not intentions, are punishable. G.o.d has reserved for himself judgment concerning dispositions. The third irregularity, that he who inflicts unintentional injury is not guilty, even in his own eyes, but yet seems bound to make atonement and reparation, is useful in so far as it warns everyone to be prudent, while the corresponding illusion, in virtue of which we are grateful to an involuntary benefactor-for instance, the bearer of good tidings-and reward him, is at least not harmful, for any reason appears sufficient for the bestowal of kind intentions and actions.

It is impossible to explain in brief the relation of Smith's ethical theory to his political economy. His merit in the former consists in his comprehensive and characteristic combination of the results reached by his predecessors, and in his preparation for Kantian views, so far as this was possible from the empirical standpoint of the English. His impartial spectator was the forerunner of the categorical imperative.

English ethics after Smith may, almost without exception, be termed eclecticism. This is true of Ferguson (Inst.i.tutes of Moral Philosophy, 1769); of Paley (1785); of the Scottish School (Dugald Stewart, 1793). Bentham's utilitarianism was the first to bring in a new phase.

4. Theory of Knowledge.

(a) Berkeley.-George Berkeley, a native of Ireland, Bishop of Cloyne (1685-1753; An Essay toward a New Theory of Vision, 1709; A Treatise concerning the Principles of Human Knowledge, 1710; Three Dialogues between Hylas and Philonous, 1713; Alciphron, or the Minute Philosopher, 1732, against the freethinkers; Works, 1784. Fraser's edition of the Collected Works appeared in 1871, in four volumes),[1] is related to Locke as Spinoza to Descartes. He notices blemishes and contradictions allowed by his predecessor to remain, and, recognizing that the difficulty is not to be remedied by minor corrections and artificial hypotheses, goes back to the fundamental principles, takes these more earnestly than their author, and, by carrying them out more strictly, arrives at a new view of the world. The points in Locke's doctrines which invited a further advance were the following: Locke proclaims that our knowledge extends no further than our ideas, and that truth consists in the agreement of ideas among themselves, not in the agreement of ideas with things. But this principle had scarcely been announced before it was violated. In spite of his limitation of knowledge to ideas, Locke maintains that we know (if not the inner const.i.tution, yet) the qualities and powers of things without us, and have a "sensitive" certainty of their existence. Against this, it is to be said that there are no primary qualities, that is, qualities which exist without as well as within us. Extension, motion, solidity, which are cited as such, are just as purely subjective states in us as color, heat, and sweetness. Impenetrability is nothing more than the feeling of resistance, an idea, therefore, which self-evidently can be nowhere else than in the mind experiencing it. Extension, size, distance, and motion are not even sensations (we see colors only, not quant.i.tative determinations), but relations which we in thinking add to the sense-qualities (secondary qualities), and which we are not able to represent apart from them; their relativity alone would forbid us to consider them objective. And material substances, the "support" of qualities invented by the philosophers, are not only unknown, but entirely non-existent. Abstract matter is a phrase without meaning, and individual things are collections of ideas in us, nothing more. If we take away all sense-qualities from a thing, absolutely nothing remains. Our ideas are not merely the only; objects of knowledge, but also the only existing things-nothing exists except minds and their ideas. Spirits alone are active beings, they only are indivisible substances, and have real existence, while the being of bodies (as dependent, inert, variable beings, which are in a constant process of becoming) consists alone in their appearance to spirits and their being perceived by them. Incogitative, hence pa.s.sive, beings are neither substances, nor capable of producing ideas in us. Those ideas which we do not ourselves produce are the effects of a spirit which is mightier than we. With this a second inconsistency was removed which had been overlooked by Locke, who had ascribed active power to spirits alone and denied it to matter, but at the same time had made the former affected by the latter. If external sense is to mean the capacity for having ideas occasioned by the action of external material things, then there is no external sense. A third point wherein Locke had not gone far enough for his successor, concerned the favorite English doctrine of nominalism. Locke, with his predecessors, had maintained that all reality is individual, and that universals exist only in the abstracting understanding. From this point Berkeley advances a step further, the last, indeed, which was possible in this direction, by bringing into question the possibility even of abstract ideas. As all beings are particular things, so all ideas are particular ideas.

[Footnote 1: Cf. also Fraser's Berkeley (Blackwood's Philosophical Cla.s.sics) 1881; Eraser's Selections from Berkeley, 4th ed., 1891; and Krauth's edition of the Principles, 1874, with notes from several sources, especially those translated from Ueberweg.-TR.]

Berkeley looks on the refutation of these two fundamental mistakes-the a.s.sumption of general ideas in the mind, and the belief in the existence of a material world outside it-as his life work, holding them the chief sources of atheism, doubt, and philosophical discord. The first of these errors arises from the use of language. Because we employ words which denote more than one object, we have believed ourselves warranted in concluding that we have ideas which correspond to the extension of the words in question, and which contain only those characteristics which are uniformly found in all objects so named. This, however, is not the case.[1] We speak of many things which we cannot represent: names do not always stand for ideas. The definition of the word triangle as a three-sided figure bounded by straight lines, makes demands upon us which our faculties of imagination are never fully able to meet; for the triangle that we represent to ourselves is always either right-angled or oblique-angled, and not-as we must demand from the abstract conception of the figure-both and neither at once. The name "man" includes men and women, children and the aged, but we are never able to represent a man except as an individual of a definite age and s.e.x. Nevertheless we are in a position to make a safe use of these non-presentative but useful abbreviations, and by means of a particular idea to develop truths of wider application. This takes place when, in the demonstration, those qualities are not considered which distinguish the idea from others with a like name. In this case the given idea stands for all others which are known by the same name; the representative idea is not universal, but serves as such. Thus when I have demonstrated the proposition, the sum of all the angles of a triangle is equal to two right angles, for a given triangle, I do not need to prove it for every triangle thereafter. For not only the color and size of the triangle are indifferent, but its other peculiarities as well; the question whether it is right-angled or obtuse-angled, whether it has equal sides, whether it has equal or unequal angles, is not mentioned in the demonstration, and has no influence upon it. Abstracta exist only in this sense. In considering the individual Paul I can attend exclusively to those characteristics which he has in common with all men or with all living beings, but it is impossible for me to represent this complex of common qualities apart from his individual peculiarities. Self-observation shows that we have no general concepts; reason, that we can have none, for the combination of opposite elements in one idea would be a contradiction in terms. Motion in general, neither swift nor slow, extension in general, at once great and small, abstract matter without sensuous determinations-these can neither exist nor be perceived.

[Footnote 1: Against the Berkeleyan denial of abstract notions the popular philosopher, Joh. Jak. Engel, directed an essay, Ueber die Realitat allgemeiner Begriffe (Engel's Schriften, vol. x.), to which attention has been called by O. Liebmann, a.n.a.lysis tier Wirklichkeit, 2d ed., p. 473.]

The "materialistic" hypothesis-so Berkeley terms the a.s.sumption that a material world exists apart from perceiving mind, and independently of being perceived-is, first, unnecessary, for the facts which it is to explain can be explained as well, or even better, without it; and, second, false, since it is a contradiction to suppose that an object can exist unperceived, and that a sensation or idea is the copy of anything itself not a sensation or idea. Ideas are the only objects of the understanding. Sensible qualities (white, sweet) are subjective states of the soul; sense objects (sugar), sensation-complexes. If sensations need a substantial support, this is the soul which perceives them, not an external thing which can neither perceive nor be perceived. Single ideas, and those combined into objects, can exist nowhere else than in the mind; the being of sense objects consists in their being perceived (esse est percipi). I see light and feel heat, and combine these sensations of sight and touch into the substance fire, because I know from experience that they constantly accompany and suggest each other.[1] The a.s.sumption of an "object" apart from the idea is as useless as its existence would be. Why should G.o.d create a world of real things without the mind, when these can neither enter into the mind, nor (because unperceived) be copied by its ideas, nor (because they themselves lack perception and power) produce ideas in it? Ideas signify nothing but themselves, i. e., affections of the subject.

[Footnote 1: The fire that I see is not the cause of the pain which I experience in approaching it, but the visual image of the flame is only a sign which warns me not to go too near. If I look through a microscope I see a different object from the one perceived with the naked eye. Two persons never see the same object, they merely have like sensations.]

The further question arises, What is the origin of ideas? Men have been led into this erroneous belief in the reality of the material world by the fact that certain ideas are not subject to our will, while others are. Sensations are distinguished from the ideas of imagination, which we can excite and alter at pleasure, by their greater strength, liveliness, and distinctness, by their steadiness, regular order, and coherence, and by the fact that they arise without our aid and whether we will or no. Unless these ideas are self-originated they must have an external cause. This, however, can be nothing else than a willing, thinking Being; for without will it could not be active and act upon me, and without ideas of its own it could not communicate ideas to me. Because of the manifoldness and regularity of our sensations the Being which produces them must, further, possess infinite power and intelligence. The ideas of imagination are produced by ourselves, real perceptions are produced by G.o.d. The connected whole of divinely produced ideas we call nature, and the constant regularity in their succession, the laws of nature. The invariableness of the divine working and the purposive harmony of creation reveal the wisdom and goodness of the Almighty more clearly than "astonis.h.i.+ng and exceptional events." When we hear a man speak we reason from this activity to his existence. How much less are we ent.i.tled to doubt the existence of G.o.d, who speaks to us in the thousandfold works of nature.

The natural or created ideas which G.o.d impresses on us are copies of the eternal ideas which he himself perceives, not, indeed, by pa.s.sive sensation, but through his creative reason. Accordingly when it was maintained that things do not exist independently of perception, the reference was not to the individual spirit, but to all spirits. When I turn my eyes away from an object it continues to exist, indeed, after my perception has ended-in the minds of other men and in that of the Omnipresent One. The pantheistic conclusion of these principles, in the sense of Geulincx and Malebranche,[1] which one expects, was really suggested by Berkeley. Everything exists only in virtue of its partic.i.p.ation in the one, permanent, all-comprehensive spirit; individual spirits are of the same nature with the universal reason, only they are less perfect, limited, and not pure activity, while G.o.d is pa.s.sionless intelligence. But if, in the last a.n.a.lysis, G.o.d is the cause of all, this does not hold of the free actions of men, least of all of wicked ones. The freedom of the will must not be rejected because of the contradictions which its acceptance involves; motion, also, and mathematical infinity imply incomprehensible elements. In the philosophy of nature Berkeley prefers the teleological to the mechanical view, since the latter is able to discover the laws of phenomena only, but not their efficient and final causes. Sense and experience acquaint us merely with the course of phenomenal effects; the reason, which opens up to us the realm of causation, of the spiritual, is the only sure guide to science and truth. The understanding does not feel, the senses do not know. We have no (sensuous) idea of other spirits, but only a notion of them; instead of themselves we perceive their activities merely, from which we argue to souls like ourselves, while we know our own mind by immediate self-consciousness.[2]

[Footnote 1: The example of Arthur Collier shows that the same results which Berkeley reaches empirically can be obtained from the standpoint of rationalism. Following Malebranche, and developing further the idealistic tendencies of the latter, Collier had, independently of Berkeley, conceived the doctrine of the "non-existence or impossibility of an external world "; but had not worked it out in his Clavis Universalis, 1713, until after the appearance of Berkeley's chief work, and not without consideration of this. The general point of view and the arguments are the same: Existence is equivalent to being perceived by G.o.d; the creation of a real world of matter apart from the ideal world in G.o.d and from sensuous perceptions in us would have been a superfluous device, etc.]

[Footnote 2: It should be remembered, however, that this immediate knowledge of ourselves is also "not after the manner of an idea or sensation." Our knowledge of spirits is always mediated by "notions" not by "ideas" in the strict sense, that is, not by "images." Cf. Principles, ---- 27, 135 seq., especially in the second edition.-TR.]

In contrast to the fearlessness with which Berkeley propounds his spiritualism, his anxious endeavors to take away the appearance of paradox from his immaterialistic doctrine, and to show its complete agreement with common sense, excite surprise. Even the common man, he argues, desires nothing more than that his perceptions be real; the distinction between idea and object is an invention of philosophers. Here Berkeley cannot be acquitted of a certain sophistical play upon the term "idea," which, in fact, is ambiguous. He understands by it that which the soul perceives (its immediate, inner object), but the popular mind, that through which the soul perceives an object. The reality of an idea in us is different from the idea of a real thing, or from the reality of that which is perceived without us by means of the idea, and it is just this last meaning which common sense affirms and Berkeley denies. In any case it was a work of great merit to have transferred the existence of objects beyond our ideas, of things-in-themselves, out of the region of the self-evident into the region of the problematical. We never get beyond the circle of our ideas, and if we posit a thing-in-itself as the ground and object of the idea, this also is simply a thought, an idea. For us there is no being except that of the perceiver and the perceived. Later we shall meet two other forms of idealism, in Leibnitz and Fichte. Both of these agree with Berkeley that spiritual beings alone are active, and active beings alone real, and that the being of the inactive consists in their being perceived. But while in Berkeley the objective ideas are impressed upon finite spirits by the Infinite Spirit from without and singly, with Leibnitz they appear as a fullness of germs, which G.o.d implanted together in the monads at the beginning, and which the individual develops into consciousness, and with Fichte they become the unconscious productions of the Absolute Ego acting in the individual egos. For the two former as many worlds exist as there are individual spirits, their harmony being guaranteed, in the one case, by the consistency of G.o.d's working, and, in the other, by his foresight. For Fichte, on the other hand, there is but one world, for the absolute is not outside the individual spirits, but the uniformly working force within them.

(b) Hume.-David Hume was born in Edinburgh in 1711, and died in the same city, 1776. His position as librarian, which he held in the place of his birth, 1752-57, gave the opportunity for his History of England( 1754-62). His chief work, the Treatise on Human Nature, which, however, found few readers, was composed during his first residence in France in 1734-37. Later he worked over the first book of this work into his Enquiry concerning Human Understanding (1748); the second book into A Dissertation on the Pa.s.sions; and the third into An Enquiry concerning the Principles of Morals. These, and others of his essays, found so much favor that, during his second sojourn in France, as secretary to Lord Hertford, in 1763-66, he was already honored as a philosopher of world-wide renown. Then, after serving for some time as Under-Secretary of State, he retired to private life at home (1769).

The three books of the Treatise on Human Nature, which appeared in 1739-40, are ent.i.tled Of the Understanding, Of the Pa.s.sions, Of Morals. Of the five volumes of the Essays, the first contains the Essays Moral, Political, and Literary, 1741-42; the second, the Enquiry concerning Human Understanding, 1748; the third, the Enquiry concerning the Principles of Morals, 1751; the fourth, the Political Discourses, 1752; the fifth, 1757, the Four Dissertations, including that On the Pa.s.sions and the Natural History of Religion. After Hume's death appeared the Autobiography, 1777; the Dialogues concerning Natural Religion, 1779; and the two small essays on Suicide and the Immortality of the Soul, 1783.[1] The Philosophical Works were published in 1827, and frequently afterward.[2]

[Footnote 1: Or 1777, cf. Green and Grose's edition, vol. iii. p. 67 seq.-Tr.]

[Footnote 2: Among the works on Hume we may mention Jodl's prize treatise, 1872, and Huxley's Hume (English Men of Letters), 1879. [The reader may be referred also to Knight's Hume (Blackwood's Philosophical Cla.s.sics), 1886; to T.H. Green's "Introductions" in Green and Grose's edition of the collected works in four volumes, 1874 (new ed. 1889-90), which is now standard; and to Selby-Bigge's reprint of the original edition of the Treatise, I vol., 1888, with a valuable a.n.a.lytical Index.]]

Hume's object, like that of Berkeley, is the improvement of Locke's doctrine of knowledge. In several respects he does not go so far as Berkeley, in others very much farther. In agreement with Berkeley's ultra-nominalism, which combats even the possibility of abstract ideas, he yet does not follow him to the extent of denying external reality. On the other hand, he carries out more consistently Berkeley's hint that immediate sensation includes less than is ascribed to it (e.g., that by vision we perceive colors only, and not distance, etc.), as well as his principle-destructive to the certainty of our knowledge of nature-that there is no causality among phenomena; and brings the question of substance to, the negative conclusion, that there is no need whatever for a support for groups of qualities, and, therefore, that substantiality is to be denied to immaterial as well as to material beings. The points in Locke's philosophy which seemed to Hume to need completion were different from those at which Berkeley had struck in. The ant.i.thesis of rational and empirical knowledge is more sharply conceived; the combination of ideas is not left to the choice of the understanding but placed under the dominion of psychological laws; and to the distinction between outer and inner experience (to the former of which priority is conceded, on the ground that we must have had an external sensation before we can, through reflection, be conscious of it as an internal phenomenon), there is added a second, as important as the other and crossing it, between impressions and ideas, of which the former are likewise made prior to the latter.

Everyone will acknowledge the considerable difference between a sensation actually present (of heat, for instance) and the mere idea of one previously experienced, or shortly to come. This consists in the greater force, liveliness, and vividness of the former. Although these two cla.s.ses of states (the idea of a landscape described by a poet and the perception of a real one, anger and the thought of anger) are only quant.i.tatively distinct, they are scarcely ever in danger of being confused-the most lively idea is always less so than the weakest perception. The actual, outer or inner, sensations may be termed impressions; the weaker images of memory or imagination, which they leave behind them, ideas. Since nothing can gain entrance to the soul except through the two portals of outer and inner experience, there is no idea which has not arisen from an impression or several such; every idea is the image and copy of an impression. But as the understanding and imagination variously combine, separate, and transpose the elements furnished by the senses and lingering in memory, the possibility of error arises. A hidden, and, therefore more dangerous source of error consists in the reference of an idea to a different impression than the one of which it is the copy. The concepts substance and causality are examples of such false reference.

The combination of ideas takes place without freedom, in a purely mechanical, way according to fixed rules, which in the last a.n.a.lysis reduce to three fundamental laws of a.s.sociation: Ideas are a.s.sociated (1) according to their resemblance and contrast; (2) according to their contiguity in s.p.a.ce and time; (3) according to their causal connection. Mathematics is based on the operation of the first of these laws, on the immediate or mediate knowledge of the resemblance, contrariety, and quant.i.tative relations of ideas; the descriptive and experimental part of the sciences of nature and of man on the second; religion, metaphysics, and that part of physical and moral science which goes beyond mere observation on the third. The theory of knowledge has to determine the boundaries of human understanding and the degree of credibility to which these sciences are ent.i.tled.

The objects of human thought and inquiry are either relations of ideas or matters of fact. To the former cla.s.s belong the objects of mathematics, the truths of which, since they are a.n.a.lytic (i. e., merely explicate in the predicate the characteristics already contained in the subject, and add nothing new to this), and since they concern possible relations only, not reality, possess intuitive or demonstrative certainty. It is only propositions concerning quant.i.ty and number that are discoverable a priori by the mere operation of thought, without dependence on real existence, and that can be proved from the impossibility of their opposites-mathematics is the only demonstrative science.

We reach certainty in matters of fact by direct perception, or by inferences from other facts, when they transcend the testimony of our senses and memory. These arguments from experience are of an entirely different sort from the rational demonstrations of mathematics; as the contrary of a fact is always thinkable (the proposition that the sun will not rise to-morrow implies no logical contradiction), they yield, strictly speaking, probability only, no matter how strong our conviction of their accuracy may be. Nevertheless it is advisable to separate this species of inferences from experience-whose certainty is not doubted except by the philosophers-from uncertain probabilities, as a cla.s.s intermediate between the latter and demonstrative truth (demonstrations-proofs-probabilities). All reasonings concerning matters of fact are based on the relation of cause and effect. Whence, then, do we obtain the knowledge of cause and effect? Not by a priori thought. Pure reason is able only to a.n.a.lyze concepts into their elements, not to connect new predicates with them. All its judgments are a.n.a.lytic, while synthetic judgments rest on experience. Judgments concerning causation belong in this latter cla.s.s, for effects are entirely distinct from causes; the effect is not contained in the cause, nor the latter in the former. In the case of a phenomenon previously unknown we cannot tell from what causes it has proceeded, nor what its effect will be. We argue that fire will warm us, and bread afford nourishment, because we have often perceived these causal pairs closely connected in s.p.a.ce and time. But even experience does not vouchsafe all that we desire. It shows nothing more than the coexistence and succession of phenomena and events; while the judgment itself, e. g., that the motion of one body stands in causal connection with that of another, a.s.serts more than mere contiguity in s.p.a.ce and time, it affirms not merely that the one precedes the other, but that it produces it-not merely that the second follows the first, but that it results from it. The bond which connects the two events, the force that puts forth the second from the first, the necessary connection between the two is not perceived, but added to perception by thought, construed into it.[1] What, then, is the occasion and what the warrant for transforming perceived succession in time into causal succession, for subst.i.tuting must for is, for interpreting the observed connection of fact into a necessary connection which always eludes observation?

[Footnote 1: The weakness of the concept of cause had been recognized before Hume by the skeptic, J. Glanvil (1636-80). Causality itself cannot be perceived; we infer it from the constant succession of two phenomena, without being able to show warrant for the transformation of thereafter into thereby.]

We do not causally connect every chance pair of successive events, but those only which have been repeatedly observed together. The wonder is, then, that through oft-repeated observation of certain objects we come to believe that we know something about the behavior of other like objects, and the further behavior of these same ones. From the fact that I have seen a given apple fall ten times to the ground, I infer that all the apples in the world do the same when loosened, instead of flying upward, which, in itself, is quite as thinkable; I infer further that this has always been the case, and will continue to be so to all eternity. Where is the intermediate link between the proposition, "I have found that such an object has always been attended with such an effect," and this other, "I foresee that other objects which are, in appearance, similar, will be attended with similar effects"? This postulate, that the future will be like the past, and that like causes will have like effects, rests on a purely psychological basis. In virtue of the laws of a.s.sociation the sight of an object or event vividly recalls the image of a second, often observed in connection with the former, and leads us involuntarily to expect its appearance anew. The idea of causal connection is based on feeling (the feeling of inner determination to pa.s.s from one idea to a second), not upon insight; it is a product of the imagination, not of the understanding. From the habitual perception of two events in connection (suns.h.i.+ne and heat) arises the mental determination to think of the second when we perceive the first, and, antic.i.p.ating the senses, to count on its appearance. It is now possible to state of what impression the idea of the causal nexus is the copy: the impression on which it is based is the habitual transition from the idea of a thing to its customary attendant. Hence the idea of causality has a purely subjective significance, not the objective one which we ascribe to it. It is impossible to determine whether there is a real necessity of becoming corresponding to the felt necessity of thought. In life we never doubt the fact, but for science our conviction of the uniformity of nature remains a merely probable (though a very highly probable) conviction. Complete certainty is vouchsafed only by rational demonstration and immediate experience. The necessary bond which we postulate between cause and effect can neither be demonstrated nor felt.

If all experiential reasonings depend on the idea of causality, and this has no other support than subjective mental habit, it follows that all knowledge of nature which goes beyond mere observed fact is not knowledge (neither demonstrative knowledge nor knowledge of fact), but belief.[1] The probability of our belief in the regularity of natural phenomena increases, indeed, with every new verification of the a.s.sumptions based thereon; but, as has been shown, it never rises to absolute certainty. Nevertheless inferences from experience are trustworthy and entirely sufficient for practical life, and the aim of the above skeptical deliverances was not to shake belief-only a fool or a lunatic can doubt in earnest the immutability of nature-but only to make it clear that it is mere belief, and not, as. .h.i.therto held, demonstrative or factual knowledge. Our doubt is intended to define the boundary between knowledge and belief, and to destroy that absolute confidence which is a hindrance rather than a help to investigation. We should recognize it as a wise provision of nature that the regulation of our thoughts and the belief in the objective validity of our antic.i.p.ation of future events have not been confided to the weak, inconstant, inert, and fallacious reason, but to a powerful instinct. In life and action we are governed by this natural impulse, in spite of all the scruples of the skeptical reason.

[Footnote 1: Hume distinguishes belief as a form of knowledge from religious faith, both in fact and in name. In the Treatise-the pa.s.sage is wanting in the Enquiry-our conviction of the external existence of the objects of perception is also ascribed to the former, which later formed Jacobi's point of departure. Religious faith is referred to revelation.]

In Hume's earlier work his destructive critique of the idea of cause is accompanied by a deliverance in a similar strain on the concept of substance, which is not included in the shorter revision. Substances are not perceived through impressions, but only qualities and powers. The unknown something which is supposed to have qualities, or in which these are supposed to inhere, is an unnecessary fiction of the imagination. A permanent similarity of attributes by no means requires a self-identical support for these. A thing is nothing more than a collection of qualities, to which we give a special name because they are always found together. The idea of substance, like the idea of cause, is founded in a subjective habit which we erroneously objectify. The impression from which it has arisen is our inner perception that our thought remains constant in the repeated experience of the same group of qualities (whenever I see sugar, I do the same thing, that is, I combine the qualities white color, sweet taste, hardness, etc., with one another), or the impression of a uniform combination of ideas. The idea of substance becomes erroneous through the fact that we refer it not to the inner activity of representation, to which it rightly belongs, but to the external group of qualities, and make it a real, permanent substratum for the latter. Mental substances disappear along with material substances. The soul or mind is, in reality, nothing more than the sum of our inner states, a collection of ideas which flow on in a continuous and regular stream; it is like a stage, across which feelings, perceptions, thoughts, and volitions are pa.s.sing while it does not itself come into sight. A permanent self or ego, as a substratum of ideas, is not perceived; there is no invariable, permanent impression. That which leads to the a.s.sumption of personal ident.i.ty is only the frequent repet.i.tion of similar trains of ideas, and the gradual succession of our ideas, which is easily confused with constancy. Thus robbed of its substantiality, the soul has no further claims to immateriality and immortality, and suicide ceases to be a crime.[1]

[Footnote 1: Cf. the essays on Suicide and the Immortality of the Soul, 1783, whose authors.h.i.+p by Hume, however, is not absolutely established [of. Green and Grose, as above, p. 221, note first.-TR.]]

Is Hume roundly to be called a skeptic? [1] He never impugned the validity of mathematical reasonings, nor experimental truths concerning matters of fact; in regard to the former his thought is rationalistic, in regard to the latter it is empirical or, more accurately, sensationalistic. His att.i.tude toward the empirical sciences of nature and of mind is that of a semi-skeptic or probabilist, in so far as they go beyond the establishment of facts to the proof of connections under law and to inferences concerning the future. Habit is for him a safe guide for life, although it does not go beyond probabilities; absolute knowledge is unattainable for us, but not indispensable. Toward metaphysics, as an alleged science of the suprasensible, he takes up an entirely negative att.i.tude. If an argument from experience is to be a.s.sured of merely that degree of probability which is sufficient for belief, it must not only have a well-established fact (an impression or memory-image) for its starting point, but, together with its conclusion, it must keep within the limits of possible experience. The limits of possible experience are also the limits of the knowable; inferences to the continued existence of the soul after death and to the being of G.o.d are vain sophistry and illusion. According to the famous conclusion of the Essay, all volumes which contain anything other than "abstract reasonings concerning quant.i.ty or number" or "experimental reasonings concerning matter of fact and existence" deserve to be committed to the flames. In view of this limitation of knowledge to that which is capable of exact measurement and that which is present in experience, as well of the principle that the elements added by thought are to be sharply distinguished from the positively given (the immediate facts of perception), we must agree with those who call Hume the father of modern positivism.[2]

[Footnote 1: In the Essay, Hume describes his own standpoint as mitigated or academical skepticism in ant.i.thesis to the Cartesian, which from doubt and through doubt hopes to reach the indubitable, and to the excessive skepticism of Pyrrhonism, which cripples the impulse to inquiry. This moderate skepticism asks us only, after resisting the tendency to unreflecting conclusions, to make a duty of deliberation and caution in judging, and to restrain inquiry within those fields which are accessible to our knowledge, i.e., the fields of mathematics and empirical fact. In the Treatise Hume had favored a sharper skepticism and extended his doubt more widely, e.g., even to the trustworthiness of geometry. Cf. on this point Ed. Grimm, Zur Geschichte des Erkenntnissproblems, 1890, p, 559 seq.]

[Footnote 2: So Volkelt, Erfahrung und Denken, 1886, p. 105.]

As a philosopher of religion Hume is the finisher and destroyer of deism. Of the three principles of the deists-religion, its origin and its truth are objects of scientific investigation; religion has its origin in the reason and the consciousness of duty; natural religion is the oldest, the positive religions are degenerate or revived forms of natural religion-he accepts the first, while rejecting the other two. Religion may correspond to reason or contradict it, but not proceed from it. Religion has its basis in human nature, yet not in its rational but its sensuous side; not in the speculative desire for knowledge, but in practical needs; not in the contemplation of nature, but in looking forward with fear or joy to the changing events of human life. Anxiety and hope concerning future events lead us to posit unseen powers as directing our destiny, and to seek their favor. The capriciousness of fortune points to a plurality of G.o.ds; the tendency to conceive all things like ourselves gives them human characteristics; the powerful impression made by all that comes within the sphere of the senses incites us to connect the divine power with visible objects; the allegorical laudation and deification of eminent men leads to a completed polytheism. That this and not (mono-) theism was the original form of religion, Hume a.s.sumes to be a fact for historical times, and a well-founded conjecture for prehistoric ages. Those who hold that humanity began with a perfect religion find it difficult to explain the obscuration of the truth, endow immature ages with a developed use of the reason which they can scarcely have possessed, make error grow worse with increasing culture, and contradict the historical progress upward which is everywhere else observed. The philosophical knowledge of G.o.d is a very late product of mature reflection; even monotheism, as a popular religion, did not arise from rational reflection, although its chief principle is in agreement with the results of philosophy, but from the same irrational motives as polytheism. Its origin from polytheism is accomplished by the transformation of the leading G.o.d (the king of the G.o.ds or the tutelary deity of the nation) through the fear and emulous flattery of his votaries into the one, infinite, spiritual ruler of the world. Amid the folly of the superst.i.tious herd, however, this refined idea is not long preserved in its purity; the more exalted the conception entertained of the supreme deity, the more imperatively the need makes itself felt for the interpolation between this being and mankind of mediators and demi-G.o.ds, partaking more of the human nature of the wors.h.i.+pers and more familiar to them. Later a new purification takes place, so that the history of religion shows a continuous alternation of the lower and higher forms.

After depriving theism of its prerogative of originality, Hume further takes away from it its fame as in every respect the best religion. It is disadvantageously distinguished from polytheism by the fact that it is more intolerant, makes its followers pusillanimous, and, by its incomprehensible dogmas, puts their faith to severer tests; while it is on a level with polytheism in that most of its adherents exalt belief in foolish mysteries, fanaticism, and the observance of useless customs above the practice of virtue.

The Natural History of Religion, which far outbids the conclusions of the deists by its endeavors to explain religion, not on rational, but on historical and psychological grounds, and to separate it entirely from knowledge by relegating it to the sphere of practice, leaves the possibility of a philosophical knowledge of G.o.d an open question. The Dialogues concerning Natural Religion greatly diminish this hope. The most cogent argument for the intelligence of the world-ground, the teleological argument, is a hypothesis which has grave weaknesses, and one to which many other equally probable hypotheses may be opposed. The finite world, with its defects and abounding misery amid all its order and adaptation, can never yield an inference to an infinite, perfect unit-cause, to an all-powerful, all-wise, and benevolent deity. To this the eleventh section of the Enquiry adds the argument, that it is inadmissible to ascribe to the inferred cause other properties than those which are necessary to explain the observed effect. The tenth section of the same Essay argues that there is no miracle supported by a sufficient number of witnesses credible because of their intelligence and honesty, and free from a preponderance of contradictory experiences and testimony of greater probability. In short, the reason is neither capable of reaching the existence of G.o.d by well-grounded inference nor of comprehending the truth of the Christian religion with its accompanying miracles. That which transcends experience cannot be proven and known, but only believed in. Whoever is moved by faith to give a.s.sent to things which contradict all custom and experience, is conscious of a continued miracle in his own person.

Hume never denied the existence of G.o.d, never directly impugned revelation. His final word is doubt and uncertainty. It is certain that his counsel not to follow the leaders.h.i.+p of the reason in religious matters, but to submit ourselves to the power of instinct and common opinion, was less earnest and less in harmony with the nature of the philosopher than his other advice, to take refuge from the strife of the various forms of superst.i.tion in the more quiet, though dimmer regions of-naturally, the skeptical-philosophy. Hume's originality and greatness in this field consist in his genetic view of the historical religions. They are for him errors, but natural ones, grounded in the nature of man, "sick men's dreams," whose origin and course he searches out with frightful cold-bloodedness, with the dispa.s.sionate interest of the dissector.