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I think that the role of the mathematician is to discover these patterns and to explain them.

比如說，你下午四點鐘來。那么從三點鐘起，我就開始感到幸福。時間越臨近，我就越感到幸福。到了四點鐘的時候，我就會坐立不安：我就會發現幸福的代價。

我只是個四歲的孩子，每天都在成長一些。

The farmer is the only man in our economy who has to buy everything at retail, sell everything at wholesale, and pay the freight both ways.

生活不是等待風暴過去，而是學會在雨中跳舞。