It's not easy for an entrepreneur to find the time to blog. But for those who do it, it is a great tool to communicate with the various stakeholders in their business and build a reputation for thought leadership.

People already love to play casual games. But when you take a casual game and stick it inside a social network, it becomes way more exciting.

We need new medical approaches to preventing and/or curing disease. We need new scientific approaches to generating, storing, and being more efficient with energy. Maybe we need more space exploration. Maybe we need more undersea exploration.

Not acknowledging that beauty is complex-that's the problem. I enjoy making it complex for people, because that's my world.

If you want to unleash more creativity in your company, you need to allow for a little contamination. It is the sand in the oyster that creates the pearl.

Not only do you have to put yourself in harms way in service of your country, you have to leave your families at home. It is a great sacrifice.

My venture investing career has three phases, all roughly 6-8 years long. The first, at Euclid, was software to Internet. The second, at Flatiron, was Internet to bubble. And the third, at USV, has been web 2 to mobile. I have always used a new firm to denote a new investment phase for me. Throw away the old. Start with the new.