The Republic by Plato Part 4 Page 65

distinguished from other kinds and is therefore termed architecture.

Certainly.

Because it has a particular quality which no other has?

Yes.

And it has this particular quality because it has an object of a particular kind; and this is true of the other arts and sciences?

Yes.

Now, then, if I have made myself clear, you will understand my original meaning in what I said about relatives. My meaning was, that if one term of a relation is taken alone, the other is taken alone; if one term is qualified, the other is also qualified. I do not mean to say that relatives may not be disparate, or that the science of health is healthy, or of disease necessarily