You're building a tool, not a piece of art. Don't be blinded by the vision.

If you laugh a lot, when you get older your wrinkles will be in the right places.

We can't be afraid to be weird.

Hire great people and give them freedom to be awesome.

Most of the time, the things that really change the world exist for something fundamentally selfish and then the world-changing ends up being a side-effect of that.

If you don't have those moments where you go too far, then you're probably not going far enough.

I think the big thing about Groupon is just people had never seen anything grow quite so fast.