Things never go smoothly.

If you can't feed a team with two pizzas, it's too large.

Mediocre theoretical physicists make no progress. They spend all their time understanding other people's progress.

But there's so much kludge, so much terrible stuff, we are at the 1908 Hurley washing machine stage with the Internet. That's where we are. We don't get our hair caught in it, but that's the level of primitiveness of where we are. We're in 1908.

The best customer service is if the customer doesn't need to call you, doesn't need to talk to you. It just works.

The human brain is an incredible pattern-matching machine.

Do something you're very passionate about, and don't try to chase what is kind of the "hot passion" of the day.