I keep challenging myself because I don't want to repeat.

No man, for any considerable period, can wear one face to himself and another to the multitude, without finally getting bewildered as to which may be the true.

人类和动物的行为受相同法则支配。

译文：老天爷的心思猜不透，但做人的道理容易守住。

诗人的话语是他们灵魂的回声。

You can't run a business, or anything, on a theory.

In computational complexity, we are not just dealing with the limits of what we can compute, but also with the limits of what we can prove.