A gentleman has three pleasures: his parents are perfect, but his brothers are absent; Yang is worthy of the sky and doesn't care about people; Educate the best people in the world. "A gentleman has three pleasures" comes from the "special chapter and sentence" in Mencius. Mencius said, "A gentleman has three pleasures, but the king of the world does not exist. Parents exist, brothers have no chance, and they are happy; Yang is worthy of the sky, regardless of people, but also happy; If you are educated by talents in the world, you will have three pleasures. "

"Parents have, brothers have no cause" means that both parents and brothers are alive without disaster, and there is no resentment between brothers. This is the first kind of happiness of a gentleman, that is, family happiness. China culture, especially Confucian culture, pays special attention to the happiness of human relations.

"Looking up at the sky and not caring about others" means not feeling guilty for the sky and not being ashamed. This is the second happy thing, which is the happiness of becoming a virtue.

"Educating talents in the world" means educating them by getting talents in the world, which is the third kind of happiness for a gentleman, that is, the joy of teachers and friends.