In the first 30 years of your life, you make your habits. For the last 30 years of your life, your habits make you.

Once IBM gains control of a market sector, they almost always stop innovation. They prevent innovation from happening.

So [Polaroid's Dr. Edwin] Land, at 75, went off to spend the remainder of his life doing pure science, trying to crack the code of color vision. The man is a national treasure. I don't understand why people like that can't be held up as models: This is the most incredible thing to be - not an astronaut, not a football player - but this.

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.

Stealing music is not right, and I can understand people being very upset about their intellectual property being stolen.

I thought deeply about this. I ended up concluding that the worst thing that could possibly happen as we get big and as we get a little more influence in the world is if we change our core values and start letting it slide, I can't do that. I'd rather quit.

Quality is more important than quantity. One home run is much better than two doubles.