For how is it possible, says that acute man, that when a concept is given me, I can go beyond it and connect with it another which is not contained in it, in such a manner as if that latter necessarily belonged to the former?

It is precisely in knowing its limits that philosophy consists.

Imagination is a powerful agent for creating, as it were, a second nature out of the material supplied to it by actual nature.

Standing armies shall in time be totally abolished.

Two things strike me dumb: the infinite starry heavens, and the sense of right and wrong in man.

Here I shall add that the concept of change, and with it the concept of motion, as change of place, is possible only through and in the representation of time. & Motion, for example, presupposes the perception of something movable. But space considered in itself contains nothing movable; consequently motion must be something which is found in space only through experience -in other words, is an empirical datum.

He who has made great moral progress ceases to pray