l things ruled or measured. Hence it is evident
that the good of moral virtue consists in conformity with the rule of
reason. Now it is clear that between excess and deficiency the mean
is equality or conformity. Therefore it is evident that moral virtue
observes the mean.
Reply Obj. 1: Moral virtue derives goodness from the rule of reason,
while its matter consists in passions or operations. If therefore we
compare moral virtue to reason, then, if we look at that which it has
of reason, it holds the position of one extreme, viz. conformity;
while excess and defect take the position of the other extreme, viz.
deformity. But if we consider moral virtue in respect of its matter,
then it holds the position of mean, in so far as it makes the passion
conform to the rule of reason. Hence the Philosopher says (Ethic. ii,
6) that "virtue, as to its essence, is a mean state," in so far as
the rule of virtue is imposed on its proper matter: "but it is an
extreme in reference to the 'best' and the 'excellent, '" viz. as to
its conformity with reason.
Reply Obj. 2: In actions and passions the mean and the extremes
depend on various circumstances: hence nothing hinders something from
being extreme in a particular virtue as to one circumstance, while
the same thing is a mean in respect of other circumstances, through
being in conformity with reason. This is the case with magnanimity
and magnificence. For if we look at the absolute quantity of the
respective objects of these virtues, we shall call it an extreme and
a maximum: but if we consider the quantity in relation to other
circumstances, then it has the character of a mean: since these
virtues tend to this maximum in accordance with the rule of reason,
i.e. _where_ it is right, _when_ it is right, and for an _end_ that
is right. There will be excess, if one tends to this maximum _when_
it is not right, or _where_ it is not right, or for an undue _end;_
and there will be deficiency if one fails to tend thereto _where_ one
ought, and _when_ one ought. This agrees with the saying of the
Philosopher (Ethic. iv, 3) that the "magnanimous man observes the
extreme in quantity, but the mean in the right mode of his action."
Reply Obj. 3: The same is to be said of virginity and poverty as of
magnanimity. For virginity abstains from all sexual matters, and
poverty from all wealth, for a right end, and in a right manner, i.e.
according to God's word, and for the sake of eternal life. B
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