We're learning a lot from large international competitors... As we go international, we're looking to add something unique to the market. And so when we do go international, it won't just be as a taxi service.

Our goal was never to create a better taxi.

From the way that we build cars or going after space travel, I get excited about the transportation space because it's the second-highest household expense after housing.

I think we've built a bit of a culture and a market around people who are open and seek out that social interaction.

It's hard to have money in the bank and want something and then not get it.

I wanted to build a tool for my generation: people 20 to 40 who don't want to spend time balancing a checkbook or checking multiple financial institutions' websites. Mint does just that, giving comprehensive, quick insights into a user's finances from their computer, mobile phone and/or tablet.

A painting lets us know how somebody literally saw things. A piece of music is another language that transmits a whole wealth of emotion and wordless experience. But writing is special in the way at allows us to temporarily enter another person's world, to step outside the boundaries of our own time and space.

There is definitely an addiction to money that I have.