The difference between a policy and a crusade is that a policy is judged by its results, while a crusade is judged by how good it makes its crusaders feel.

质量不是趋势；它是一种传统。

The language of mathematics is universal, transcending cultural and linguistic barriers.

永远要走“正道”，它并不拥挤。

The only thing that makes life possible is permanent, intolerable uncertainty; not knowing what comes next.

A good detective listens more than she talks.