There are three sorts of friendships which are advantageous, and three which are injurious. Friendships with the upright, friendships with the sincere, and friendships with the well informed are advantageous. Friendships with those who flatter, friendships with those of weak principles, and friendships with those who talk cleverly are injurious.
There are three sorts of pleasures which are advantageous, and three which are injurious. Finding pleasure in the discriminating study of ceremonies and music, finding pleasure in discussing the good points in the conduct of others, and finding pleasure in having many wise friends, these are advantageous. But finding pleasure in profligate enjoyments, finding pleasure in idle gadding about, and finding pleasure in feasting, these are injurious.