广义相对论已经通过了我们所有的测试，甚至在超大质量黑洞附近也是如此。

The only way you can write the truth is to assume that what you set down will never be read.

Our heroes are human heroes. That's a very new situation. Most other societies have had, right at their center, the worship of something transcendent: a god, a spirit, a natural force, the universe, whatever it is -- something else that is being worshiped. We've slightly lost the habit of doing that, which is, I think, why we're particularly drawn to nature.

"I want to write books that make children think and feel."

从挫折中获得智慧、变得坚强，意味着你比以往任何时候都更有能力生存。只有在逆境来临的时候，你才会真正认识你自己，了解身边的人。这种了解是真正的财富，虽然是用痛苦换来的，但比我以前得到的任何资格证书都有用。