And that first division of the subject, that namely of living well, they sought in nature herself, and said that it was necessary to obey her; and that that chief good to which everything was referred was not to be sought in anything whatever except in nature. And they laid it down that the crowning point of all desirable things, and the chief good, was to have received from nature everything which is requisite for the mind, or the body, or for life. But of the goods of the body, they placed some in the whole, and others in the parts. Health, strength, and beauty in the whole. In the parts, soundness of the senses, and a certain excellence of the individual parts. As in the feet, swiftness; in the hands, strength; in the voice, clearness; in the tongue, a distinct articulation of words. The excellences of the mind they considered those which were suitable to the comprehension of virtue by the disposition. And those they divided under the separate heads of nature and morals. Quickness in learning and memory they attributed to nature; each of which was described as a property of the mind and genius. Under the head of “morals” they classed our studies, and, I may say, our habits, which they formed, partly by a continuity of practice, partly by reason. And in these two things was contained philosophy itself, in which that which is begun and not brought to its completion, is called a sort of advance towards virtue; but that which is brought to completion is virtue, being a sort of perfection of nature and of all things which they place in the mind; the one most excellent thing. These things then are qualities of the mind. The third division was that of life. And they said that those things which had influence in facilitating the practice of virtue were connected with this division. For virtue is discerned in some good qualities of the mind and body, which are added not so much to nature as to a happy life. They thought that a man was as it were a certain part of the state, and of the whole human race, and that he was connected with other men by a sort of human society. And this is the way in which they deal with the chief and natural good. But they think that everything else is connected with it, either in the way of increasing or of maintaining it; as riches, power, glory, and influence. And thus a threefold division of goods is inferred by them.