优秀的数学家不是知道所有答案的人，而是能提出正确问题的人。

The true writer is one who dares to confront the uncomfortable truths of our time.

卖出股票的最佳时机几乎永远不会到来。

There is only one boss. The customer. And he can fire everybody in the company from the chairman on down, simply by spending his money somewhere else.