LV. Beauty also is divided into three kinds. For there is one kind which is praiseworthy, as that of a beautiful face. Another which is useful, as an instrument or a house, and things of that kind which are beautiful, with reference to our use of them. There is also a beauty with reference to laws, and habits, and things of that kind, which is likewise beautiful, because of its utility. So that beauty again is looked at in three ways, with reference to its praise, its utility, and to our use of it.
LVI. The soul is divided into three parts; for one part of it is capable of reason, another is influenced by appetite, the third part is liable to passion. Of these the reasoning part is the cause of deliberating, and reasoning, and understanding, and everything of that kind. The appetite part is that portion of the soul which is the cause of desiring to eat, and to embrace and things of that kind. The passionate part is the cause of men feeling confidence and delight, and grief and anger. The soul therefore is divided into the reasoning part, the appetitive part, and the passionate part.
LVII. Of perfect virtue there are four species. One is prudence, one is justice, the third is manly gallantry, and the fourth is temperance.
Of these, prudence is the cause of a man acting rightly in affairs; justice is the cause of his acting justly in partnerships and bargains; manly gallantry is the cause of a man’s not being alarmed amid dangers and formidable circumstances, but standing firm; and temperance is the cause of his subduing his appetites, and being enslaved by no pleasure, but living decorously.
So that virtue is divided into prudence, justice, manly gallantry, and temperance.