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The main task in life is simply this: to identify and separate matters so that I can say clearly to myself which are externals not under my control, and which have to do with the choices I actually control.

當我們無力改變處境時，我們就被挑戰去改變自己。

人真正的祖國是童年。

重要的不是想法，而是實現想法。

Mathematics is the art of giving the same name to different things.

成功是團隊協作的結果；沒有人能獨自成就偉大。