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5
It is a difficult question, if one denies that a formula with an
added determinant is a definition, whether any of the terms that are
not simple but coupled will be definable. For we must explain them
by adding a determinant. E.g. there is the nose, and concavity, and
snubness, which is compounded out of the two by the presence of the
one in the other, and it is not by accident that the nose has the
attribute either of concavity or of snubness, but in virtue of its
nature; nor do they attach to it as whiteness does to Callias, or to
man (because Callias, who happens to be a man, is white), but as
'male' attaches to animal and 'equal' to quantity, and as all
so-called 'attributes propter se' attach to their subjects. And such
attributes are those in which is involved either the formula or the
name of the subject of the particular attribute, and which cannot be
explained without this; e.g. white can be explained apart from man,
but not female apart from animal. Therefore there is either no essence
and definition of any of these things, or if there is, it is in
another sense, as we have said.
But there is also a second difficulty about them. For if snub nose
and concave nose are the same thing, snub and concave will be the
thing; but if snub and concave are not the same (because it is
impossible to speak of snubness apart from the thing of which it is an
attribute propter se, for snubness is concavity-in-a-nose), either
it is impossible to say 'snub nose' or the same thing will have been
said twice, concave-nose nose; for snub nose will be concave-nose
nose
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