A proof of a proposition is a process the nature of which is such as to produce in us a belief in that proposition.

关于神，我无法知道他们是否存在。因为有许多阻碍我们认知的因素：问题的晦涩和人类生命的短暂。

生命短暂，由你来让它甜蜜。

The deepest theorems often have the simplest proofs - if you look at them from the right angle.

"The best stories are the ones that come from the heart."

In the end, we will remember not the words of our enemies, but the silence of our friends.

制造链式反应机器的基本点当然是确保每次裂变产生一定数量的中子，其中一些中子将再次产生裂变。