Charmides

by Plato

I should not.

Or did you ever know of a fear which fears itself or other fears, but has no object of fear?

I never did, he said.

Or of an opinion which is an opinion of itself and of other opinions, and which has no opinion on the subjects of opinion in general?

Certainly not.

But surely we are assuming a science of this kind, which, having no subject-matter, is a science of itself and of the other sciences?

Yes, that is what is affirmed.

But how strange is this, if it be indeed true: we must not however as yet absolutely deny the possibility of such a science; let us rather consider the matter.

You are quite right.

Well then, this science of which we are speaking is a science of something, and is of a nature to be a science of something?