理解他人，现实的唯一方法是自己去体验。
Mathematics is not a spectator sport. You have to do it to understand it.
如果你不前进，就是在落后。
我这一代人最伟大的发现是，人类可以通过改变心态来改变他们的生活。
We are not in the coffee business serving people, we are in the people business serving coffee.
The challenge in computer science is not just to solve problems, but to find the right problems to solve.
Every moment of one's existence one is growing into more or retreating into less.