"The difference between correlation and causation is fundamental in empirical work."

未来不是现在提供的替代路径中选择的结果，而是一个被创造的地方——首先在思想和意志中创造，然后在活动中创造。

You have to have confidence in your ability, and then be tough enough to follow through.

The divine right of husbands, like the divine right of kings, may, it is hoped, in this enlightened age, be contested without danger.

光永远是一种把空间戏剧化的重要元素。

"The universe is a pretty big place. If it's just us, seems like an awful waste of space."