Morose men and elderly men are less apt to make friends in proportion as they are harsher in temper, and take less pleasure in society; for delight in society seems to be, more than anything else, characteristic of friendship and productive of it. So young men are quick to make friends, but not old men (for people do not make friends with those who do not please them), nor morose men. Such people may, indeed, be well-wishers, for they wish each other good and help each other in need; but they are by no means friends, since they do not live with nor delight in each other, which things are thought to be, more than anything else characteristic of friendship.