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The whole difference between construction and creation is exactly this: that a thing constructed can only be loved after it is constructed; but a thing created is loved before it exists.

成功不是終點，失敗也不是致命的：重要的是繼續(xù)前進的勇氣。

對死亡的恐懼源于對生活的恐懼。活得充實的人隨時準備死亡。

Science progresses by constantly questioning and refining our understanding.

以孩子們能理解的方式寫一些困難的主題是很重要的。