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Truth, like gold, is to be obtained not by its growth, but by washing away from it all that is not gold.

Acknowledging what you don't know is the dawning of wisdom.

預測未來的最好方法就是創造未來。不要擔心別人會做什么。預測未來的最好方法就是創造未來。

做偉大的工作的唯一方法就是熱愛你所做的事情。