Do not try to do everything. Do one thing well.

This revolution, the information revoultion, is a revolution of free energy as well, but of another kind: free intellectual energy. It's very crude today, yet our Macintosh computer takes less power than a 100-watt bulb to run it and it can save you hours a day. What will it be able to do ten or 20 years from now, or 50 years from now?

Your thoughts construct patterns like scaffolding in your mind. You are really etching chemical patterns. In most cases, people get stuck in those patterns, just like grooves in a record, and they never get out of them.

I was worth about over a million dollars when I was 23 and over ten million dollars when I was 24, and over a hundred million dollars when I was 25 and... it wasn't that important — because I never did it for the money.

Do not try to do everything. Do one thing well.

The real art is knowing what to leave out, not what to put in.

There's nothing that makes my day more than getting an e-mail from some random person in the universe who just bought an iPad over in the UK and tells me the story about how it's the coolest product they've ever brought home in their lives. That's what keeps me going.