The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all.

所有的大人起先都是孩子，但愿我们都能记住这一点。

唯一真正的发现之旅不在于寻找新的风景，而在于拥有新的眼光。

A good mathematician is lazy, but in a constructive way.

在自然界中，没有什么是孤立存在的。

Freedom and order are not incompatible; truth is strength; free discussion is the very life of truth.  

The truth is always an insult or a joke, lies are generally tasteless.

未来不是现在提供的替代路径中选择的结果，而是一个被创造的地方——首先在思想和意志中创造，然后在活动中创造。