In the realm of mathematics, every problem is an opportunity to discover something new and profound.

The past is a foreign country; they do things differently there.

程序测试可以用来显示错误的存在，但永远不能显示它们的缺失！

The things we admire in men, kindness and generosity, openness, honesty, understanding and feeling, are the concomitants of failure in our system. And those traits we detest, sharpness, greed, acquisitiveness, meanness, egotism and self-interest, are the traits of success.

I think that one should recognize reality even when one doesn’t like it; indeed, especially when one doesn’t like it.

最好的书是读完后仍长久留在你心中的书。