And when they leave,they take your life of details with them. You are expected to move on again, but you don't remember what it was that moved you, because no one's asked you in so long. Not even yourself.

"The best stories come from asking difficult questions, not providing easy answers."

To quiet a crowd or a drunk， just whisper.

数学的本质在于其自由性。

The study of intelligence must be grounded in the study of symbol systems.

爱是一切问题的答案。