a. Locke’s philosophy is more especially directed against Descartes, who, like Plato, had spoken of innate ideas. Locke likewise makes special examination of the “inborn impressions (notiones communes in foro interiori descriptæ)” which Lord Herbert assumes in his work De veritate. In the first book of his work Locke combats the so-called innate ideas, theoretic as well as practical, i.e. the universal, absolutely existent ideas which at the same time are represented as pertaining to mind in a natural way. Locke said that we arrive first at that which we call idea. By this he understands not the essential determinations of man, but conceptions which we have and which are present and exist in consciousness as such: in the same way we all have arms and legs as parts of our bodies, and the desire to eat exists in everyone. In Locke we thus have the conception of the soul as of a contentless tabula rasa which is by-and-by filled with what we call experience.[215] The expression “innate principles” was at that time common, and these innate principles have sometimes been foolishly spoken of. But their true signification is that they are implicit, that they are essential moments in the nature of thought, qualities of a germ, which do not yet exist: only in relation to this last there is an element of truth in Locke’s conclusions. As diverse conceptions essentially determined they are only legitimatized by its being shown that they are implied in the essential nature of thought; but as propositions which hold good as axioms, and conceptions which are immediately accepted as laid down in definitions, they undoubtedly possess the form of that which is present and inborn. As they are regarded they are bound to have value in and for themselves; but this is a mere assertion. From the other point of view the question of whence they come is a futile one. Mind is undoubtedly determined in itself, for it is the explicitly existent Notion; its development signifies the coming to consciousness. But the determinations which it brings forth from itself cannot be called innate, for this development must be occasioned by an external, and only on that does the activity of mind react, in order that it may for the first time become conscious of its reality.
The grounds on which Locke refutes innate ideas are empirical. “There is nothing more commonly taken for granted than that there are certain principles, both speculative and practical, universally agreed upon by all mankind: which therefore, they argue, must needs be constant impressions which the souls of men receive in their first Beings.” But this universal consent is not to be found. We may instance the proposition, “Whatsoever is, is; and It is impossible for the same thing to be and not to be; which of all others I think have the most allowed title to innate.” But this proposition does not hold good for the Notion; there is nothing either in heaven or earth which does not contain Being and non-Being. Many men, “All children and idiots,” says Locke, “have not the least apprehension of these propositions.” “No proposition can be said to be in the mind which it never yet knew, which it was never yet conscious of.... ’Tis usually answered, That all men know and assent to them” (the propositions) “when they come to the use of reason.... If it be meant that the use of reason assists us in the knowledge of these maxims, it would prove them not to be innate.” Reason is said to be the deriving from principles already known unknown truths. How then should the application of reason be required to discover supposed innate principles? This is a weak objection, for it assumes that by innate ideas we understand those which man possesses in consciousness as immediately present. But development in consciousness is something altogether different from any inherent determination of reason, and therefore the expression innate idea is undoubtedly quite wrong. Innate principles must be found “clearest and most perspicuous nearest the fountain, in children and illiterate people, who have received least impression from foreign opinion.” Locke gives further reasons of a similar nature, more especially employing those which are of a practical kind—the diversity in moral judgments, the case of those who are utterly wicked and depraved, devoid of sense of right or conscience.[216]
b. In the second book Locke goes on to the next stage, to the origin of ideas, and seeks to demonstrate this process from experience—this is the main object of his efforts. The reason that the positive point of view which he opposes to any derivation from within, is so false, is that he derives his conceptions only from outside and thus maintains Being-for-another, while he quite neglects the implicit. He says: “Every man being conscious to himself, that he thinks; and that which his mind is applied about, while thinking, being the ideas that are there; ’tis past doubt, that men have in their minds several ideas, such as those expressed in the words, whiteness, hardness, sweetness, thinking, motion, man, elephant, army, drunkenness, and others.” Idea here signifies both the ordinary conception and thought; we understand something quite different by the word idea. “It is in the first place then to be inquired, how he comes by them” (these ideas)? Innate ideas have already been refuted. “Let us then suppose the mind to be, as we say, white paper, void of all characters, without any ideas; how comes it to be furnished?... To this I answer in a word, from Experience: in that all our knowledge is founded.”[217]
As to the question in point we must in the first place say that it is true that man commences with experience if he desires to arrive at thought. Everything is experienced, not merely what is sensuous, but also what excites and stimulates my mind. Consciousness thus undoubtedly obtains all conceptions and Notions from experience and in experience; the only question is what we understand by experience. In a usual way when this is spoken of the idea of nothing particular is conveyed; we speak of it as of something quite well known. But experience is nothing more than the form of objectivity; to say that it is something which is in consciousness means that it has objective form for consciousness or that consciousness experiences it, it sees it as an objective. Experience thus signifies immediate knowledge, perception, i.e. I myself must have and be something, and the consciousness of what I have and am is experience. Now there is no question as to this, that whatever we know, of whatever kind it may be, must be experienced, that rests in the conception of the thing. It is absurd to say that one knows anything which is not in experience. I undoubtedly know men, for instance, from experience, without requiring to have seen them all, for I have, as man, activity and will, a consciousness respecting what I am and what others are. The rational exists, i.e. it is as an existent for consciousness, or this last experiences it; it must be seen and heard, it must be there or have been there as a phenomenon in the world. This connection of universal with objective is however in the second place not the only form, that of the implicit is likewise absolute and essential—that is, the apprehension of what is experienced or the abrogation of this apparent other-being and the knowledge of the necessity of the thing through itself. It is now quite a matter of indifference whether anything is accepted as something experienced, as a succession of empirical ideas, if one may so say, or conceptions; or whether the succession is a succession of thoughts, i.e. implicitly existent.
Locke treats of the various kinds of these ideas imperfectly and empirically merely.
α. According to Locke simple ideas arise partly from outward, and partly from inward experience. For experiences, he says, are in the first place sensations; the other side is reflection, the inward determinations of consciousness.[218] From sensation, from the organs of sight for instance, the conceptions of colour, light, etc., arise; there further arises from outward experience the idea of impenetrability, of figure, rest, motion and such like. From reflections come the ideas of faith, doubt, judgment, reasoning, thinking, willing, etc.; from both combined, pleasure, pain, etc. This is a very commonplace account of the matter.
β. After Locke has presupposed experience, he goes on to say that it is the understanding which now discovers and desires the universal—the complex ideas. The Bishop of Worcester made the objection that “If the idea of substance be grounded upon plain and evident reason, then we must allow an idea of substance which comes not in by sensation or reflection.” Locke replies: “General ideas come not into the mind by sensation or reflection, but are the creatures or inventions of the understanding. The mind makes them from ideas which it has got by sensation and reflection.” The work of the mind now consists in bringing forth from several simple so-called ideas a number of new ones, by means of its working upon this material through comparing, distinguishing and contrasting it, and finally through separation or abstraction, whereby the universal conceptions, such as space, time, existence, unity and diversity, capacity, cause and effect, freedom, necessity, take their rise. “The mind in respect of its simple ideas is wholly passive, and receives them all from the existence and operation of things, such as sensation or reflection offers them, without being able to make any one idea.” But “the mind often exercises an active power in making these several combinations. For it being once furnished with simple ideas it can put them together in several combinations.” According to Locke therefore thought itself is not the essence of the soul, but one of its powers and manifestations. He maintains thought to be existent in consciousness as conscious thought, and thus brings it forward as a fact in his experience, that we do not always think. Experience demonstrates dreamless sleep when the sleep is profound. Locke quotes the example of a man who remembered no dream until he had reached his twenty-fifth year. It is as in the Xenien,—[219]
Oft schon war ich, und hab’ wirklich an gar nichts gedacht.
That is to say, my object is not a thought. But sensuous perception and recollection are thought, and thought is truth.[220] Locke, however, places the reality of the understanding only in the formal activity of constituting new determinations from the simple conceptions received by means of perception, through their comparison and the combination of several into one; it is the apprehension of the abstract sensations which are contained in the objects. Locke likewise distinguishes (Bk. II. chap. xi. § 15-17) between pure and mixed modes. Pure modes are simple determinations such as power, number, infinitude; in such expressions as causality we reach, on the other hand, a mixed mode.
Locke now explains in detail the manner in which the mind, from the simple ideas of experience, reaches more complex ideas; but this derivation of general determinations from concrete perception is most unmeaning, trivial, tiresome and diffuse; it is entirely formal, an empty tautology. For instance we form the general conception of space from the perception of the distance of bodies by means of sight and feeling.[221] Or in other words, we perceive a definite space, abstract from it, and then we have the conception of space generally; the perception of distances gives us conceptions of space. This however is no deduction, but only a setting aside of other determinations; since distance itself is really space, mind thus determines space from space. Similarly we reach the notion of time through the unbroken succession of conceptions during our waking moments,[222] i.e. from determinate time we perceive time in general. Conceptions follow one another in a continual succession; if we set aside the particular element that is present we thereby receive the conception of time. Substance (which Locke does not accept in so lofty a sense as Spinoza), a complex idea, hence arises from the fact that we often perceive simple ideas such as blue, heavy, etc., in association with one another. This association we represent to ourselves as something which so to speak supports these simple ideas, or in which they exist.[223] Locke likewise deduces the general conception of power.[224] The determinations of freedom and necessity, cause and effect, are then derived in a similar way. “In the notice that our senses take of the constant vicissitude of things, we cannot but observe, that several particulars, both qualities and substance, begin to exist; and that they receive this their existence from the due application and operation of some other being. From this observation we get our ideas of cause and effect,” for instance when wax is melted by the fire.[225] Locke goes on to say: “Every one, I think, finds in himself a power to begin or forbear, continue or put an end to several actions in himself. From the consideration of the extent of this power of the mind over the actions of the man, which every one finds in himself, arise the ideas of liberty and necessity.”[226]