Success is not final, failure is not fatal: it is the courage to continue that counts.

The real art of conversation is not only to say the right thing at the right place but to leave unsaid the wrong thing at the tempting moment.

同理心是创新的关键。

The Langlands program is a challenge to our understanding of the fundamental nature of mathematics.

战争即和平。自由即奴役。无知即力量。