In mathematics, the art of proposing a question must be held of higher value than solving it.
最深刻的洞见往往来自意想不到的地方。
唯一真正的监狱是恐惧,唯一真正的自由是从恐惧中解脱。
鸟有巢,蜘蛛有网,人有友谊。