任何真正新颖的东西都是在一个人的青年时期发明发现出来的，当一个人变得更有经验，更有名，也更顽固。

最伟大的头脑既能成就最伟大的美德，也能犯下最严重的恶行。

The development of the drone industry is ultimately to serve humans, not to replace them.

The best and most beautiful things in the world cannot be seen or even touched - they must be felt with the heart.

The greatest thing in style is to have a command of metaphor.

Every ton of coal we extract carries a responsibility—to our workers, communities, and the planet.