Especially in technology, we need revolutionary change, not incremental change.

You know what it's like to wake up in the middle of the night with a vivid dream? And you know that if you don't have a pencil and pad by the bed, it will be completely gone by the next morning. Sometimes it's important to wake up and stop dreaming. When a really great dream shows up, grab it.

The moments that we have with friends and family, the chances that we have to make a big difference in the world or even to make a small difference to the ones we love, all those wonderful chances that life gives us, life also takes away. It can happen fast and a whole lot sooner than you think.

Most of us carry at least one device, all the time, every day. In fact many of us would feel naked without our smartphone. It's hardly surprising mobile search queries - and mobile commerce - are growing dramatically across the world.

I think it is often easier to make progress on mega-ambitious dreams. I know that sounds completely nuts. But, since no one else is crazy enough to do it, you have little competition. There are so few people this crazy that I feel like I know them all by first name. They all travel as if they are pack dogs and stick to each other like glue. The best people want to work the big challenges.

You don't need to have a 100-person company to develop that idea.

If you ask an economist what’s driven economic growth, it’s been major advances in things that mattered - the mechanization of farming, mass manufacturing, things like that. The problem is, our society is not organized around doing that.