Wisdom is hard learned, we forget too easily
What is a good man?
Simply one whose life is useful to the world.
And a bad man is simply one whose life is harmful to others.
There are, however, those who are harmful and yet enjoy a good reputation.
Who manage to profit by a show of unselfishness,
These are the worst of all.
(From a conversation between Chang Chao and Hanchen. 15th century)