種一棵樹最好的時(shí)間是二十年前，其次是現(xiàn)在。
The best time to plant a tree was twenty years ago. The second best time is now.
Leadership is about making others better as a result of your presence and making sure that impact lasts in your absence.
為了懲罰我對(duì)權(quán)威的蔑視，命運(yùn)使我自己也成為權(quán)威。
The future of the world lies in the cities of the Third World.
Theorems are the milestones of mathematics.
盡可能多地向你的合作伙伴傳達(dá)一切。他們知道的越多，他們就越理解。他們理解的越多，他們就越關(guān)心。一旦他們關(guān)心了，就沒有什么能阻止他們了。
A proof is a device for convincing someone else that a mathematical statement is true.