The only way to do great work is to love what you do.

La vertu ne peut aller sans la liberté.

My goal is simple. It is a complete understanding of the universe, why it is as it is and why it exists at all.

The only thing that scares me more than space aliens is the idea that there aren't any space aliens. We can't be the best that creation has to offer. I pray we're not all there is. If so, we're in big trouble.

重要的是不要停止提问。好奇心有其存在的理由。

我们必须记住，历史是由胜利者书写的，但记忆却是由失败者保存的。