But here a confusion may arise; and I should wish to guard against an opponent starting up and saying that no man desires drink only, but good drink, or food only, but good food; for good is the universal object of desire, and thirst being a desire, will necessarily be thirst after good drink; and the same is true of every other desire.

Yes, he replied, the opponent might have something to say.

Nevertheless I should still maintain, that of relatives some have a quality attached to either term of the relation; others are simple and have their correlatives simple.

I do not know what you mean.

Well, you know of course that the greater is relative to the less?

Certainly.

And the much greater to the much less?

Yes.

And the sometime greater to the sometime less, and the greater that is to be to the less that is to be?

Certainly, he said.