功成名就之时隐退，这样做才符合天道。

The best designs come from understanding the needs of the people who will use them.

The theory of probabilities is at bottom nothing but common sense reduced to calculus.

I'm not a perfectionist, but I like to feel that things are done well.

穷人不仅仅是消极的受害者；他们是试图在艰难世界中航行的积极行动者。

The writer must be a defender of the marginal, the forgotten, the defeated.