To live is the rarest thing in the world. Most people exist, that is all.

不要因为峭壁是高的，便让你的爱情坐在峭壁上。

You forget what you want to remember, and you remember what you want to forget.

"The past is never dead. It's not even past."

在数学中，最简单的问题往往导致最深刻的发现。