I've always been amazed by Da Vinci, because he worked out science on his own. He would work by drawing things and writing down his ideas. Of course, he designed all sorts of flying machines way before you could actually build something like that.

Anything that someone's interested in should be very, very easy to call up onto the screen. And in fact the computer over time will see what you're interested in and make that immediately available without your having to be give any commands at all.

Whether it's Google or Apple or free software, we've got some fantastic competitors and it keeps us on our toes.

Most people overestimate what they can do in one year and underestimate what they can do in ten years.

The only role other than paying their taxes, whatever those are, the only role for philanthropy broadly - of which the rich should give disproportionately - the more, the better - and I think there is a positive trend in that direction - there are certain risk-taking things, like trying out a new type of charter school or funding a new kind of medicine.

People are going to buy cheap fertilizer so they can grow enough crops to feed themselves, which will be increasingly difficult with climate change.

To create a new standard it takes something that's not just a little bit different. It takes something that's really new and really captures people's imagination. And the Macintosh, of all the machines I've ever seen, is the only one that meets that standard.