It really matters whether people are working on generating clean energy or improving transportation or making the Internet work better and all those things. And small groups of people can have a really huge impact.

The most dangerous phrase in business is 'We've always done it this way.'

宇宙之美在于其复杂性和支配它的法则的简洁性。

I'm not a place, I'm a dimension.

A true friend is someone who sees the pain in your eyes while everyone else believes the smile on your face.

宇宙可能从一个非常平滑和均匀的状态开始，然后演变成我们今天看到的复杂和有结构的宇宙。