I like to take things step by step, and I don’t like to look too far ahead.

I don't think you can ever really know what a film is about until it's finished.

I am not an Athenian or a Greek，but a citizen of the world.

Efficiency in forestry doesn't mean cutting more—it means making every tree count.

膨胀的概念是宇宙在其最早的时刻经历了一段极其迅速的扩张期。

Leadership is about making tough decisions and standing by them, even when they are unpopular.