Mathematics knows no races or geographic boundaries; for mathematics, the cultural world is one country.
When I'm angry, I play basketball to vent my anger on the ball.
生活中最好的老师是经验。
种树的最佳时间是20年前。第二好的时间就是现在。
量子力学和广义相对论之间的相互作用是现代物理学中最深刻的谜题之一，解决它可能需要我们彻底重新思考对宇宙的理解。
The time which we have at our disposal every day is elastic; the passions that we feel expand it, those that we inspire contract it; and habit fills up what remains.