And when you’re down in the hole， when that moment comes， it’s really okay to feel bad for a little while. Give yourself time to mourn what you think you may have lost but then here’s the key， learn from every mistake because every experience， encounter， and particularly your mistakes are there to teach you and force you into being more who you are. And then figure out what is the next right move.

"It is not easy to free myth from reality."

可持续性不是一种选择，而是我们对下一代的责任。

Writing is a way of questioning the world, of trying to understand it.

人是一切事物的尺度。

在数学中，没有捷径可走。