I would not dare to say that there is a direct relation between mathematics and madness, but there is no doubt that great mathematicians suffer from maniacal characteristics.

The secret of change is to focus all of your energy not on fighting the old, but on building the new.

我们都在见证同样的事件，但我们看到的方式不同。

我认为这很少是关于你在课堂上学到的东西——它主要是关于你问自己的问题。