I went to Princeton specifically to study physics.

It's harder to be kind than clever

I'm skeptical of any mission that has advertisers at its centerpiece.

The killer app that got the world ready for appliances was the light bulb. So the light bulb is what wired the world. And they weren't thinking about appliances when they wired the world. They were really thinking about - they weren't putting electricity into the home. They were putting lighting into the home.

Ebooks had to happen.

You don't choose your passions; your passions choose you.

We've got thousands of investors counting on us. And we're a team of thousands of employees all counting on each other. That's fun.