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

Tech stocks are trading at a 30-year-low when compared to the multiples of industrials (companies). Its the weirdest bubble when everyone hates everything.

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?

The good news is we had this idea of cloud computing. The bad news is we were 10 years too early.

Out of ten swings at the bat, you get maybe seven strikeouts, two base hits, and if you are lucky, one home run. The base hits and the home runs pay for all the strikeouts

When I talk to entrepreneurs today, I feel like the grandfather who was in the Civil War.

If you're unhappy, you should change what you're doing.