it; nor is there any doubt what kind of face, eyes, ears and other features are peculiar to man. But certainly it is necessary for them to be in good health and vigorous, and to have all their natural movements and uses; so that no part of them shall be absent, or disordered, or enfeebled; for nature requires soundness. For there is a certain action of the body which has all its motions and its general condition in a state of harmony with nature, in which if anything goes wrong through any distortion or depravity, either by any irregular motion or disordered condition,—as if, for instance, a person were to walk on his hands, or to walk not forwards but backwards,—then he would evidently appear to be flying from himself, and to be putting off his manhood, and to hate his own nature. On which account, also, some ways of sitting down, and some contorted and abrupt movements, such as wanton or effeminate men at times indulge in, are contrary to nature. So that even if that should happen through any fault of the mind, still the nature of the man would seem to be changed in his body. Therefore, on the contrary, moderate and equal conditions, and affections, and habits of the body, seem to be suitable to nature. But now the mind must not only exist, but must exist in a peculiar manner, so as to have all its parts sound, and to have no virtue wanting: but each sense has its own peculiar virtue, so that nothing may hinder each sense from performing its office in the quick and ready perception of those things which come under the senses.
XIII. But there are many virtues of the mind, and of that part of the mind which is the chief, and which is called the intellect; but these virtues are divided into two principal classes: one, consisting of those which are implanted by nature, and are called involuntary; the other, of those which depend on the will, and are more often spoken of by their proper name of virtues; whose great excellence is attributed to the mind as a subject of praise. Now in the former class are docility, memory, and others, nearly all of which are called by the one name of ingenium, and those who possess them are called ingeniosi. The other class consists of those which are great and real virtues; which we call voluntary, such as prudence, temperance, fortitude, justice, and others of the same kind. And this was what might be said briefly of both mind and body; and this statement supplies a sort of sketch of what the
