As has been already noted, the mischief lies in the hypostatisation of ideas as something existing in abstraction from things—and, of things, in abstraction from ideas. They are two abstractions, the first by the realist, the second by the idealist called subjective and psychological. To the realist, things exist by themselves, and they manage to produce a copy of themselves (more or less exact, or symbolical) in _our_ mind, i.e. in a materialistically-spiritual or a spiritualistically-material locus which holds “images” and ideas. To the psychological idealist, ideas have a substantive and primary right to existence, them alone do we really know, and from them we more or less legitimately are said (but probably no one takes this seriously) to infer or postulate a world of permanent things. Now ideas have no substantive existence as a sort of things, or even images of things anywhere. All this is pure mythology. It is said by comparative mythologists that in some cases the epithet or quality of some deity has been substantialised (hypostatised) into a separate god, who, however (so still to keep up the unity), is regarded as a relative, a son, or daughter, of the original. So the phrase “ideas of things” has been taken literally as if it was double. But to have an idea of a thing merely means that we know it, or think it. An idea is not given: it is a thing which is given in the idea. An idea is not an additional and intervening object of our knowledge or supposed knowledge. That a thing is our object of thought is another word for its being our idea, and that means we know it.