我不认为每个人都应该成为数学家，但我确实相信许多学生没有给数学一个真正的机会。

比喻要有长期坚持和忍耐的毅力。

"The past is a burden we carry with us, shaping our present and future in ways we cannot always understand."

The biggest risk is not taking any risk. In a world that's changing quickly, the only strategy that is guaranteed to fail is not taking risks.

大自然赋予我形体使我负载，赋予我生命使我劳碌，使我变老以得到安闲，使我死亡以得到安息。所以能把活着当作好事，也就能把死去当作好事了。