Innovation accelerates and compounds. Each point in front of you is bigger than anything that ever happened.

Breakthrough ideas look crazy, nuts. It’s hard to think this way — I see it in other people’s body language, and I can feel it in my own, where I sometimes feel like I don’t even care if it’s going to work, I can’t take more change. O.K., Google, O.K., Twitter—but Airbnb? People staying in each other’s houses without there being a lot of axe murders?

Any new technology tends to go through a 25-year adoption cycle.

No one should expect building a new high-growth, software-powered company in an established industry to be easy. It's brutally difficult.

All's fair in love, war and ride-sharing.

Start-ups should be based on radical ideas. There should be a high failure rate for start-ups, because if there isn't their ideas aren't bold enough.

Companies in every industry need to assume that a software revolution is coming.