For the past 33 years, I have looked in the mirror every morning and asked myself: 'If today were the last day of my life, would I want to do what I am about to do today?' And whenever the answer has been 'No' for too many days in a row, I know I need to change something.

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.

When I went to school, it was right after the '60s and before this general wave of practical purposefulness had set in.... The idealistic wind of the '60s was still at our backs, though, and most of the people I know who are my age have that engrained in them forever.

I don't view wealth as something that validates my intelligence.

Quality is more important than quantity. One home run is much better than two doubles.

Coming back to America was, for me, much more of a culture shock than going to India. The people in the Indian countryside don't use their intellect like we do, they use their intuition instead, and their intuition is far more developed than in the rest of the world. Intuition is a very powerful thing, more powerful than intellect in my opinion. That's had a big impact on my work.

I'm an optimist in the sense that I believe humans are noble and honorable, and some of them are really smart. I have a very optimistic view of individuals.