But as we allow him not the name of a frugal man (_frugi_), who either quits his post through fear, which is cowardice; or who reserves to his own use what was privately committed to his keeping, which is injustice; or who fails in his military undertakings through rashness, which is folly--for that reason the word frugality takes in these three virtues of fortitude, justice, and prudence, though it is indeed common to all virtues, for they are all connected and knit together.

Let us allow, then, frugality itself to be another and fourth virtue; for its peculiar property seems to be, to govern and appease all tendencies to too eager a desire after anything, to restrain lust, and to preserve a decent steadiness in everything.

The vice in contrast to this is called prodigality (_nequitia_).

Frugality, I imagine, is derived from the word _fruge_, the best thing which the earth produces; _nequitia_ is derived (though this is perhaps rather more strained; still, let us try it; we shall only be thought to have been trifling if there is nothing in what we say) from the fact of everything being to no purpose (_nequicquam_) in such a man; from which circumstance he is called also _Nihil_, nothing.

Whoever is frugal, then, or, if it is more agreeable to you, whoever is moderate and temperate, such a one must of course be consistent; whoever is consistent, must be quiet; the quiet man must be free from all perturbation, therefore from grief likewise: and these are the properties of a wise man; therefore a wise man must be free from grief.
IX.