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.

When you're young, you look at television and think, there's a conspiracy. The networks have conspired to dumb us down. But when you get a little older, you realize that's not true. The networks are in business to give people exactly what they want.

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.

The customer is the final inspector.

What this means is that people are seeing a stable business, which is good, and a business that is in control, which is also good.

I hate the way people use PowerPoints instead of thinking

First was the mouse. The second was the click wheel. And now, we're going to bring multi-touch to the market. And each of these revolutionary interfaces has made possible a revolutionary product - the Mac, the iPod and now the iPhone.