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真正的幸福的源泉在我們自身。一個人只要自己善于追求幸福，別人是無法使他落到真正悲慘的境地的。

心理學必須避免一切形式的心靈主義。

I think one’s art goes as far and as deep as one’s love goes.

In mathematics, as in life, the most elegant solutions often arise from a deep understanding of the problem.

The only way to improve is to play against the best.

作家的職責是講述可怕的真相，而讀者的職責是從中學習。