If you truly have a passion for what you do, you will care even about the parts unseen.

Picasso had a saying - 'good artists copy, great artists steal' - and we have always been shameless about stealing great ideas.

Leonardo da Vinci was comfortable being illegitimate, gay, a misfit, a heretic. But he also respected other people. He didn't get into disputations. He was a genius but he had a certain humility. In his notebooks you see lists of people he wanted to grill about things like how the water diversions in Milan work; he was always interested in learning from other people.

Otherwise, as Dylan says, if you're not busy being born, you're busy dying.

Without Steve Jobs, you would have well-designed computers, probably open and not integrated, but they wouldn't have sex appeal, they wouldn't have romance.

I wonder now how tough you have to be to get big things done.

I think the biggest innovations of the twenty-first century will be the intersection of biology and technology. A new era is beginning, just like the digital one was when I was his age.