The true measure of success is how many times you can bounce back from failure.

世界不会记住你说过什么，但会记住你做过什么。

绘画是我的梦想，电报则是我的噩梦。

"Innocence always calls mutely for protection when we would be so much wiser to guard ourselves against it: innocence is like a dumb leper who has lost his bell, wandering the world, meaning no harm."

发散级数是魔鬼的发明，基于它们的任何证明都是一种耻辱。