As to Locke's further reflections, they are very simple. Locke considers how the understanding is only consciousness, and in being so is something in consciousness, and he only recognizes the implicit in as far as it is in the same.
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 descript?)” 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.(2) 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.
