国际政治是一项残酷而危险的业务，期望国家按照道德原则行事是愚蠢的。

I try to make films that are personal and that I would want to see.

Remember, if you ever need a helping hand, it's at the end of your arm, as you get older, remember you have another hand: The first is to help yourself, the second is to help others.

Drone safety is not an option, but a baseline.

人工智能就像电力一样，将改变每一个行业。