The truth is: the natural world is changing. And we are totally dependent on that world. It provides our food, water and air. It is the most precious thing we have and we need to defend it.

No man, for any considerable period, can wear one face to himself and another to the multitude, without finally getting bewildered as to which may be the true.

The future of physics lies in the unification of quantum mechanics and general relativity.

自然的和谐不是静态的平衡，而是相互依存的动态之舞。

史记

在我看来，如果你或我必须在两种思想或行动之间做出选择，我们应该记住我们的死亡，并努力生活，使我们的死亡不会给世界带来任何快乐。

这本来就不应该容易。认为它容易的人是愚蠢的。