The world is a place of the living, and the dead have no place in it. The dead are nothing. They are not even a memory. They are forgotten.
世界是生者的地方,死者在其中没有位置。死者什么都不是。他们甚至不是记忆。他们被遗忘了。
Rigor in proof is what separates mathematics from all other sciences.
最好的书是孩子们想一遍又一遍读的书。