人生而自由，却无处不在地受着枷锁。

在探索宇宙的过程中，每一个被回答的问题都会引出更多的问题。

一个人是危险的，一个没有什么可失去的人更危险。

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

And I went to talk to them about certain of the great tragedies of Western art. I wanted to see how they would seize the bare bones of certain stories, if they came in as a news item at the news desk on a Saturday afternoon.

科学的进步不仅依赖于知识的积累，还需要有挑战未知的勇气。

Hard work and perseverance are the keys to turning dreams into reality.

解析：其实说的是：不着相，不动心。