The days when a car aficionado could repair his or her own car are long past, due primarily to the high software content.

Around '93, '94, the conventional wisdom about the Internet was that it was a toy for academics and researchers. So it was very, very underestimated for about two years.

There was a point in the late '90s where all the graduating M.B.A.'s wanted to start companies in Silicon Valley, and for the most part they were not actually qualified to do it.

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?

If you think you can execute a previously failed idea, you just have to be able to show that now is the time.

Today's stock market actually hates technology, as shown by all-time low price/earnings ratios for major public technology companies

If you're the village blacksmith and a model T comes along, you better become a mechanic. People's lives are better when they get news online versus having to wait for the morning paper. It's a lot more efficient, a lot more real time, a lot less waste.