Sometimes, the only way to stay sane is to go a little crazy.
有时候，保持理智的唯一方法就是稍微疯狂一点。
Don't let yesterday take up too much of today.
Mathematics is not a spectator sport—you have to engage with it to appreciate its beauty.
The secret of being miserable is to have leisure to bother about whether you are happy or not.
I'm only rich because I know when I'm wrong... I basically have survived by recognizing my mistakes.
"In every word, there is a world waiting to be discovered."