, we have included in it
many relative terms. We did say that habits and dispositions were
relative. In practically all such cases the genus is relative, the
individual not. Thus knowledge, as a genus, is explained by reference
to something else, for we mean a knowledge of something. But particular
branches of knowledge are not thus explained. The knowledge of grammar
is not relative to anything external, nor is the knowledge of music,
but these, if relative at all, are relative only in virtue of their
genera; thus grammar is said be the knowledge of something, not the
grammar of something; similarly music is the knowledge of something,
not the music of something.

Thus individual branches of knowledge are not relative. And it is
because we possess these individual branches of knowledge that we are
said to be such and such. It is these that we actually possess: we are
called experts because we possess knowledge in some particular branch.
Those particular branches, therefore, of knowledge, in virtue of which
we are sometimes said to be such and such, are themselves qualities,
and are not relative. Further, if anything should happen to fall within
both the category of quality and that of relation, there would be
nothing extraordinary in classing it under both these heads.

Section 3

Part 9

Action and affection both admit of contraries and also of variation of
degree. Heating is the contrary of cooling, being heated of being
cooled, being glad of being vexed. Thus they admit of contraries. They
also admit of variation of degree: for it is possible to heat in a
greater or less degree; also to be heated in a greater or less degree.
Thus action and affection also admit of variation of degree. So much,
then, is stated with regard to these categories.

We spoke, moreover, of the category of position when we were dealing
with that of relation, and stated that such terms derived their names
from those of the corresponding attitudes.

As for the rest, time, place, state, since they are easily
intelligible, I say no more about them than was said at the beginning,
that in the category of state are included such states as 'shod',
'armed', in that of place 'in the Lyceum' and so on, as was explained
before.

Part 10

The proposed categories have, then, been adequately dealt with. We must
next explain the various senses in which the term 'opposite' is used.
Things are said to be opposed in four senses: (i) as cor