Some people don't like change, but you need to embrace change if the alternative is disaster.

我把它当作每天都是一个新的挑战，我必须每天变得更好。

Courage is the most important of all the virtues, because without courage you can't practice any other virtue consistently.

真正的幸福来自内心，而不是外部的成就或财富。

数学中发现的快乐是无与伦比的。