Business ends up being very dynamic and situational.

Breakthrough ideas usually come from guys who look like they're hallucinating

Nothing motivates a great employee more than a mission that's so important that it supersedes everyone's personal ambition.

A CEO needs great intelligence and great courage. And I always found my courage was tested more.

Groupon looked like a very high valuation, but any investment in a great company at any stage is almost always a good investment.

One of the great things about building a tech company is the amazing people that you can hire.

Business ends up being very dynamic and situational.