The laser is to attosecond physics what the telescope was to astronomy.
激光对于阿秒物理学的意义，就像望远镜对于天文学的意义一样。
A real decision is measured by the fact that you’ve taken a new action. If there’s no action, you haven’t truly decided.
Not for the sake of our health, though it's often presented that way, but because it's an escape from the human anthill. It's an escape from our own competition, and our own dramas. And that's why ween joy looking at glaciers and oceans, and contemplating the Earth from outside its perimeters, etc. We like to feel in contact with something that is non-human, and that is so deeply important to us.
每个案件都是一个故事，每个故事都有开始、中间和结束。