A poem about self-restraint

Everyone is good, then the world is peaceful; Everyone is selfish, and the world is in chaos. -Liu E

Selfishness is an obstacle to success. Kun Lv

Smoke, forget the past, and be selfless at heart. mould

Always seek to benefit others, not yourself. -Xie Juezai

All selfish lives are irrational and animal lives. Leo Tolstoy

People's reason shattered superstition, and people's feelings also destroyed egoism. Heine

Selflessness is a rare morality because it is unprofitable. Brecht