不要为别人而活，为自己而活。

For in the final analysis, our most basic common link is that we all inhabit this small planet. We all breathe the same air. We all cherish our children's futures. And we are all mortal.

真理的概念与自由的概念不可分割。

科学的大悲剧——一个丑陋的事实扼杀了一个美丽的假说。

真正的革命始于语言，始于以另一种方式命名世界的能力。

It is a fine thing to have ability,but the ability to discover ability in others is the true test.