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永遠不要停止學習。當你認為自己無所不知時，就是你失敗的時候。

It is better by noble boldness to run the risk of being subject to half of the evils we anticipate than to remain in cowardly listlessness for fear of what might happen.

The deepest problems of modern life derive from the claim of the individual to preserve the autonomy and individuality of his existence in the face of overwhelming social forces, of historical heritage, of external culture, and of the technique of life.

A man must strive to do his best, and then accept the consequences with equanimity.