Confucius suddenly said, "What is truth?" The guest said, "Real people are sincere. Not refined and sincere, not moving. Therefore, people who cry hard are not sad, angry people are strict but not arrogant, and close people are unhappy. It's really sad and silent, it's really angry and arrogant, and it's really that relatives didn't laugh. If truth is inside and God is outside, that's why truth is precious.
-"Zhuangzi Fisherman"