A director must be a policeman, a midwife, a psychoanalyst, a sycophant and a bastard.
导演必须是警察、助产士、心理分析师、马屁精和混蛋。
Good market design aligns individual incentives with social efficiency.
"A story is a living thing; it grows with each telling."
The world is full of obvious things which nobody by any chance ever observes.
The most important thing in mathematics is to understand the concepts, not just to memorize formulas.