尝试一种方法是常识。如果失败了，坦率地承认并尝试另一种方法。但最重要的是，尝试一些事情。

The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful.

The multiverse is not a theory, but a consequence of our theories.

戏剧是人类能够与他人分享作为人类的意义的最直接方式。