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And so of more and less, and of other correlative terms, such as

the double and the half, or again, the heavier and the lighter,

the swifter and the slower; and of hot and cold, and of any other

relatives;-is not this true of all of them?

Yes.

And does not the same principle hold in the sciences? The object

of science is knowledge (assuming that to be the true

definition), but the object of a particular science is a

particular kind of knowledge; I mean, for example, that the

science of house-building is a kind of knowledge which is defined

and 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.