经济理论提供工具，但现实世界的测试会完善它们。
Economic theory provides the tools, but real-world testing refines them.
每个演员都带来了独特的东西，我的工作就是利用这种独特性。
I think that's the single best piece of advice: constantly think about how you could be doing things better and questioning yourself.
Rigor in proof is what separates mathematics from all other sciences.
The most honest form of filmmaking is to make a film for yourself.
The success of an enterprise depends not only on technology but also on a deep understanding of the market and quick responses.