A 1% improvement in efficiency could mean the difference between life and death.
我不必是人类才能拥有人类的感情。
我们以为我们有这么多问题。我们怎么知道我们是幸福的?
I don't do easy. I make things happen.
物理是思想的框架……追索到事情的本质,再从那里思考下去。
The dead are not absent. They are just invisible.