The Shepherd, then, cares for each of his sheep; and his closest inspection is given to those who are excellent in their natures, and are capable of being most useful. Such are those fit to lead and teach, in whom the action of Providence is conspicuously seen; whenever either by instruction, or government, or administration, God wishes to benefit. But He wishes at all times. Wherefore He moves those who are adapted to useful exertion in the things which pertain to virtue, and peace, and beneficence. But all that is characterized by virtue proceeds from virtue, and leads back to virtue. And it is given either in order that men may become good, or that those who are so may make use of their natural advantages. For it co-operates both in what is general and what is particular. How absurd, then, is it, in those who attribute disorder and wickedness to the devil, to make him the bestower of philosophy, a virtuous thing! For he is thus all but made more benignant to the Greeks, in respect of making men good, than the divine providence and mind.