If one only wished to be happy, this could be easily accomplished; but we wish to be happier than other people, and this is always difficult, for we believe others to be happier than they are.

孔子说：“将知识默记在心，学习时，不感到满足；教人时，不感到疲倦，对我来说没什么问题。”

Men and women differ in their reproductive strategies because they have faced different adaptive problems throughout evolutionary history.

"Writing is a way to make sense of the chaos of the world."

Without core technology, there is no say.