The beauty of mathematics is that it is a language that can describe the universe in a way that nothing else can.
再多一点坚持，再多一点努力，看似无望的失败可能会变成辉煌的成功。
"Grief is a sort of madness, I think. It makes you do strange things."
That is what learning is. You suddenly understand something you've understood all your life, but in a new way.
If you can't afford to lose, you can't afford to win.