孤独是人类的本质。

如果耕种天地，不将天地整理好，这样就相当于是胡闹。耕种天地，一定要将土地平整翻新，然后再去播种。

The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt; and the profoundest wisdom, to know when it ought to be resisted, and when it be obeyed.

"The connection between mathematics and computer science is not just a one-way street; each field enriches the other."

过去从未死去。它甚至不是过去。