The only way to discover the limits of the possible is to go beyond them into the impossible.
世界不仅仅是我们所看到的样子。它是我们理解它的方式，不是吗？在理解某件事物时，我们赋予了它一些东西，不是吗？这不就是让生活成为一个故事吗？
数学不是一项观赏性运动；要理解它，必须积极参与其中。
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 best investment you can make is in your own abilities.
A man's real possession is his memory. In nothing else is he rich, in nothing else is he poor.