The test of a first-rate intelligence is the ability to hold two opposed ideas in mind at the same time and still retain the ability to function.

In business, as in life, you have to be willing to adapt to survive.

The best way to appreciate your job is to imagine yourself without one.

我对成为历史上最好的不感兴趣。我感兴趣的是尽我所能做到最好。

每个数学问题都有一个解决方案；你只需要找到正确的视角。

——1963年6月25日在西德市政厅柏林墙前的演说