"I keep on saying that anything is possible."

数学的美在于它的普遍性。

I love to practice. When I'm not playing, I'm practicing.

The world is full of people whose notion of a satisfactory future is, in fact, a return to the idealised past.

所有老年人共享的大秘密是，你在七八十年里真的没有改变。你的身体改变了，但你一点也没变。当然，这会引起很大的困惑。