Sometimes life's going to hit you in the head with a brick. Don't lose faith. I'm convinced that the only thing that kept me going was that I loved what I did.

Innovation distinguishes between a leader and a follower.

What had been the focus of my entire adult life was gone, and it was devastating. I didn't really know what to do for a few months. I felt that I had let the previous generation of entrepreneurs down. I was a very public failure.

Bottom line is, I didn't return to Apple to make a fortune. I've been very lucky in my life and already have one. When I was 25, my net worth was $100 million or so. I decided then that I wasn't going to let it ruin my life. There's no way you could ever spend it all, and I don't view wealth as something that validates my intelligence.

I'd rather be a Pirate than join the Navy

In most cases, strengths and weaknesses are two sides of the same coin. A strength in one situation is a weakness in another, yet often the person can't switch gears. It's a very subtle thing to talk about strengths and weaknesses because almost always they're the same thing.

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.