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.

Success is a collection of problems solved.

你有没有为将来打算过呢？

每次演唱会我都会全力以赴，因为要对得起观众的期待。

One of the best rules anybody can learn about investing is to do nothing, absolutely nothing, unless there is something to do... I just wait until there is money lying in the corner, and all I have to do is go over there and pick it up.

最安全的做法是不违背良心。有了这个秘诀，我们可以享受生活，不害怕死亡。