Marc Andreesen

The reality is the world is a really, really big place, and there's a lot of people running around with a lot on their mind. And you really have to figure out how to build a company that can put on a message that can actually reach people and have an impact globally.

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.