Don't bother just to be better than your contemporaries or predecessors. Try to be better than yourself.

释义：与心意相投的朋友在一起，心里不会感到厌倦；与理解你的人交谈，会有说不完的话。

I don't regret the things I've done, I regret the things I didn't do when I had the chance.

My good opinion once lost is lost forever.

没有任何人有权利来到这个世界又离开它而不留下他曾经存在过的明确而正当的理由。

【释义】多做好人多做善事使人快乐，做坏事有恶行罪责难逃。

在数学中，最简单的解释往往是最深刻的。