The person who is slowest in making a promise is the most faithful in performance of it.

The fundamental point in fabricating a chain reacting machine is of course to see to it that each fission produces a certain number of neutrons and some of these neutrons will again produce fission.

历史是一场我试图从中醒来的噩梦。

我们不是从祖先那里继承了海洋；我们是从子孙那里借来的。