quantity that have been mentioned.

That which is not a quantity can by no means, it would seem, be
termed equal or unequal to anything else. One particular
disposition or one particular quality, such as whiteness, is by
no means compared with another in terms of equality and
inequality but rather in terms of similarity. Thus it is the
distinctive mark of quantity that it can be called equal and
unequal.

Section 2

Part 7

Those things are called relative, which, being either said to be
of something else or related to something else, are explained by
reference to that other thing. For instance, the word 'superior'
is explained by reference to something else, for it is
superiority over something else that is meant. Similarly, the
expression 'double' has this external reference, for it is the
double of something else that is meant. So it is with everything
else of this kind. There are, moreover, other relatives, e.g.
habit, disposition, perception, knowledge, and attitude. The
significance of all these is explained by a reference to
something else and in no other way. Thus, a habit is a habit of
something, knowledge is knowledge of something, attitude is the
attitude of something. So it is with all other relatives that
have been mentioned. Those terms, then, are called relative, the
nature of which is explained by reference to something else, the
preposition 'of' or some other preposition being used to indicate