On the other two points Locke's convictions were implicit rather than speculative: he resisted the Cartesian theories without much developing his own, as after all was natural in a critic engaged in proving that our natural faculties were not intended for speculation. All knowledge came from experience, and no man could know the savour of a pineapple without having tasted it. Yet this savour, according to Locke, did not reside at first in the pineapple, to be conveyed on contact to the palate and to the mind; but it was generated in the process of gustation; or perhaps we should rather say that it was generated in the mind on occasion of that process. At least, then, in respect to secondary qualities, and to all moral values, the terms of human knowledge were not drawn from the objects encountered in the world, but from an innate sensibility proper to the human body or mind. Experience—if this word meant the lifelong train of ideas which made a man's moral being—was not a source of knowledge but was knowledge (or illusion) itself, produced by organs endowed with a special native sensibility in contact with varying external stimuli. This conclusion would then not have contradicted, but exactly expressed, the doctrine of innate categories.
As to the soul, which might exist without thinking, Locke still called it an immaterial substance: not so immaterial, however, as not to be conveyed bodily with him in his coach from London to Oxford. Although, like Hobbes, Locke believed in the power of the English language to clarify the human intellect, he here ignored the advice of Hobbes to turn that befuddling Latin phrase into plain English. Substance meant body: immaterial meant bodiless: therefore immaterial substance meant bodiless body. True, substance had not really meant body for Aristotle or the Schoolmen; but who now knew or cared what anything had meant for them? Locke scornfully refused to consider what a substantial form may have signified; and in still maintaining that he had a soul, and calling it a spiritual substance, he was probably simply protesting that there was something living and watchful within his breast, the invisible moral agent in all his thoughts and actions. It was he that had them and did them; and this self of his was far from being reducible to a merely logical impersonal subject, an "I think" presupposed in all thought: for what would this "I think" have become when it was not thinking? On the other hand it mattered very little what the substance of a thinking being might be: God might even have endowed the body with the faculty of thinking, and of generating ideas on occasion of certain impacts. Yet a man was a man for all that: and Locke was satisfied that he knew, at least well enough for an honest Englishman, what he was. He was what he felt himself to be: and this inner man of his was not merely the living self, throbbing now in his heart; it was all his moral past, all that he remembered to have been. If, from moment to moment, the self was a spiritual energy astir within, in retrospect the living present seemed, as it were, to extend its tentacles and to communicate its subjectivity to his whole personal past. The limits of his personality were those of his memory, and his experience included everything that his living mind could appropriate and re-live. In a word, he was his idea of himself: and this insight opens a new chapter not only in his philosophy but in the history of human self-estimation. Mankind was henceforth invited not to think of itself as a tribe of natural beings, nor of souls, with a specific nature and fixed possibilities. Each man was a romantic personage or literary character: he was simply what he was thought to be, and might become anything that he could will to become. The way was opened for Napoleon on the one hand and for Fichte on the other.
III
[Page 9.] All ideas must be equally conditioned.
Even the mathematical ideas which seem so exactly to describe the dynamic order of nature are not repetitions of their natural counterpart: for mathematical form in nature is a web of diffuse relations enacted; in the mind it is a thought possessed, the logical synthesis of those deployed relations. To run in a circle is one thing; to conceive a circle is another. Our mind by its animal roots (which render it relevant to the realm of matter and cognitive) and by its spiritual actuality (which renders it original, synthetic, and emotional) is a language, from its beginnings; almost, we might say, a biological poetry; and the greater the intellectuality and poetic abstraction the greater the possible range. Yet we must not expect this scope of speculation in us to go with adequacy or exhaustiveness: on the contrary, mathematics and religion, each in its way so sure, leave most of the truth out.
IV
[Page 9.] He cannot be aware of what goes on beyond him, except as it affects his own life.
Even that spark of divine intelligence which comes into the animal soul, as Aristotle says, from beyond the gates, comes and is called down by the exigencies of physical life. An animal endowed with locomotion cannot merely feast sensuously on things as they appear, but must react upon them at the first signal, and in so doing must virtually and in intent envisage them as they are in themselves. For it is by virtue of their real constitution and intrinsic energy that they act upon us and suffer change in turn at our hands; so that whatsoever form things may take to our senses and intellect, they take that form by exerting their material powers upon us, and intertwining them in action with our own organisms.
Thus the appearance of things is always, in some measure, a true index to their reality. Animals are inevitably engaged in self-transcending action, and the consciousness of self-transcending action is self-transcendent knowledge. The very nature of animal life makes it possible, within animal consciousness, to discount appearance and to correct illusion—things which in a vegetative or aesthetic sensibility would not be distinguishable from pure experience itself. But when aroused to self-transcendent attention, feeling must needs rise to intelligence, so that external fact and impartial truth come within the range of consciousness, not indeed by being contained there, but by being aimed at.