XXXVII. (135) This lesson the most holy Moses appears to teach; for such is the object of the statement that Aaron the Levite is coming forward to meet his brother Moses, and that when he sees him he rejoices in himself; and the statement that he rejoices in himself shows also, besides the doctrine which has already been mentioned, another more connected with politics, since the lawgiver is here exhibiting that genuine joy which is most especially akin to the human race; (136) for to speak strictly, the feeling of joy does not belong to abundance of money, or of possessions, or to brilliancy of renown, nor, in short, to any one of those external circumstances which are lifeless and unstable, and which contain the seeds of their decay in themselves: nor yet does it belong to personal strength and vigour, and to the other advantages of the body, which are common to even the most worthless men, and which have often brought inevitable destruction on those who possessed them. (137) Since then it is only in the virtues of the soul that genuine and unadulterated joy is found, and since every wise man rejoices, he rejoices in himself, and not in his surrounding circumstances; for the things that are in himself are the virtues of the mind on which it is worthy for a man to provide himself; but the circumstances which surround him are either a good condition of body or an abundance of external wealth, which are not proper objects for a man to pride himself on.