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Life can be pulled by goals just as surely as it can be pushed by drives.
生命可以被目标拉动,正如它被驱动力推动一样。
在年老之后,你会发现自己的双手能解决很多难题。一只手用来帮助自己,另一只用来帮助别人。
Theorems are the permanent literature of mathematics.
我们开采的岩石讲述着地球的故事;我们只是这份遗产的临时保管者。
A hundred times every day I remind myself that my inner and outer life are based on the labors of other men, living and dead, and that I must exert myself in order to give in the same measure as I have received and am still receiving...
过去总是紧张的,未来才是完美的。