物理学家必须有一种信念，即自然之书是用一种他可以学会阅读的语言写成的。

We believe that a car should not just be a vehicle, but a companion that understands you.

I write fiction and I'm told it's autobiography, I write autobiography and I'm told it's fiction, so since I'm so dim and they're so smart, let them decide what it is or it isn't.

The universe would look to a two-dimensional creature who spend its life moving on the service of what turned out to be a globe， it could travel for millions of years and would always return to its starting point， it would never be conscious of what was above it or beneath it.

如果你不愿意冒险，就永远不会取得伟大的成就。

The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.