I don’t give a damn if you’re offended. I’m not here to make you happy.

Reality is a question of perspective; the further you get from the past, the more concrete and plausible it seems—but as you approach the present, it inevitably seems more and more incredible.

数学不是一门演绎科学——那是陈词滥调。当你试图证明一个定理时，你不仅仅是列出假设然后开始推理。你所做的是反复试验、实验和猜测。

The most important single central fact about a free market is that no exchange takes place unless both parties benefit.