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.

True leadership is about making the tough decisions when no one else will.

公众在得到之前并不知道自己想要什么。

科学发现的影响可能是深远的，往往远远超出最初的预期。