When you're doing something for yourself, or your best friend or family, you're not going to cheese out. If you don't love something, you're not going to go the extra mile, work the extra weekend, challenge the status quo as much.

I'm convinced that about half of what separates successful entrepreneurs from the non-successful ones is pure perseverance.

It's not the consumers' job to figure out what they want

My job is to make the whole executive team good enough to be successors, so that's what I try to do.

If you view computer designers as artists, they're really into more of an art form that can be mass-produced, like records, or like prints, than they are into fine arts. They want something where they can express themselves to a large number of people through their medium, and their medium is technology and manufacturing.

I didn't see it then, but it turned out that getting fired from Apple was the best thing that could have ever happened to me. The heaviness of being successful was replaced by the lightness of being a beginner again, less sure about everything. It freed me to enter one of the most creative periods of my life.

When you grow up, you tend to get told that the world is the way it is, and your life is just to live your life inside the world. Try not to bash into the walls too much. Try to have a nice family life. Have fun, save a little money. That's a very limited life. Life can be much broader, once you discover one simple fact, and that is everything around that you call life was made up by people who were no smarter than you. And you can change it. You can influence it. You can build your own things that other people can use. Once you learn that, you'll never be the same again.