Just as in a good novel， a good program must be full of interesting ideas， and very， very few words.

I do not write for myself alone, but for those who cannot speak.

数学的进步归功于那些不是被应用的欲望驱动，而是被发现的喜悦驱动的人。

我们心理学的一般立场是经验性的：我们的科学不过是经验的事实。

Change will not come if we wait for some other person or some other time. We are the ones we've been waiting for. We are the change that we seek.

做伟大的事情很困难，但指挥伟大的事情更困难。

There is a kind of beauty in imperfection.

书是一颗只在别人胸膛里跳动的心。

数学不仅仅是关于数字、方程、计算或算法：它是关于理解的。