My definition of success? The more you are actively and practically engaged, the more successful you will feel.

My very first venture was a national student magazine to try to campaign against the [Vietnam] War. And so I wanted to be an editor. I wanted to bring the magazine out. And in order for the magazine to survive I had to worry about the printing and the paper manufacturing and the distribution. And, you know, I had to try to, at the end of the year, have more money coming in than going out.

I am a believer in trying to treat people properly and trying to respond and making sure that I find the time to be courteous.

I think in life the key thing is just to fight really hard to make sure something survives. If it looks like you've done everything you can to avoid failure, just move forward, move on and learn from it.

First of all, if you're setting up a new company, you want to try to find a brand that can work on a global basis.

Money is for making things happen.

Actually, we did a fun April Fools' thing with Google a couple of years ago, which we called Virgle. And we looked for volunteers to go on a one-way trip to Mars.