The reality is: sometimes you lose. And you're never too good to lose. You're never too big to lose. You're never too smart to lose. It happens.

I don’t focus on the past, I focus on the present.

Language evolved to allow us to gossip.

可持续发展不再是选择；它是当今世界生存的必要条件。

自守表示的研究是数学抽象之美的反映。