Apple no longer builds any products. When I was there, people used to call Apple "a vertically integrated advertising agency," which was not a compliment.

Marketing strategy is a series of integrated actions leading to a sustainable competitive advantage.

Steve Jobs was not an engineer: He was a brilliant individual with this ability to see around corners, to see things that other people couldn't see. I've learned over the years in the Apple that there are some really talented people who can take the same evidence, the same facts, and look at them and see them in a way that interprets those facts entirely different than most people do.

I feel most badly, though, [because] after 10 years, I was at the company, I wanted to go back to New York where I was from. Why I didn’t go to Steve Jobs and say, ‘Steve, let’s figure out how you can come back and lead your company.’ I didn’t do that, it was a terrible mistake on my part. I can’t figure out why I didn’t have the wisdom to do that. But I didn’t. And as life has it, shortly after that, I was fired.

When I was 5 or 6 years old, I never wanted toys; I wanted electrical parts so I could build things. And I was better at taking things apart and putting them back together, but I always had extra pieces left over, so I think it was an early warning that I was a better designer than an engineer.

Everything at Apple can be best understood through the lens of designing. Whether it's designing the look and feel of the user experience, or the industrial design, or the system design, and even things like how the boards were laid out.

I remember going into Steve's [Jobs] house, and he had almost no furniture in it. He just had a picture of Einstein, whom he admired greatly, and he had a Tiffany lamp and a chair and a bed. He just didn't believe in having lots of things around, but he was incredibly careful in what he selected.