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.

We just wanted to build the best thing we could build

Ad campaigns are necessary for competition. But good PR educates people; that's all it is.

I'm convinced that about half of what separates the successful entrepreneurs from the non-successful ones is pure perseverance... Unless you have a lot of passion about this, you're not going to survive. You're going to give it up. So you've got to have an idea, or a problem or a wrong that you want to right that you're passionate about otherwise you're not going to have the perseverance to stick it through.

What we want to do is make a leapfrog product that is way smarter than any mobile device has ever been, and super-easy to use. This is what iPhone is. OK? So, we're going to reinvent the phone.

I'm as proud of what we don't do as I am of what we do.

These technologies can make life easier, can let us touch people we might not otherwise. You may have a child with a birth defect and be able to get in touch with other parents and support groups, get medical information, the latest experimental drugs. These things can profoundly influence life. I'm not downplaying that.