Every problem in NP can be reduced to the satisfiability problem, which is the cornerstone of computational complexity theory.

"The best books are the ones that make you see the world differently."

我写作是因为没有写作我无法生活。

The elegance of a proof is as important as its correctness.

It's not the writer's job to tell you how to feel. It's the writer's job to tell you something and make you feel it.

资本资产定价模型（CAPM）是理解风险-回报权衡的有用工具，但它远非完美。