The stuff coming out of Silicon Valley is dorky. Like, it's not very sexy.

I learned from my past.

Social media, like blogs, are truth-seeking technologies. In fact, the Internet itself is the greatest truth-generating device ever created.

You have to have a big vision and take very small steps to get there. You have to be humble as you execute but visionary and gigantic in terms of your aspiration. In the Internet industry, it's not about grand innovation, it's about a lot of little innovations: every day, every week, every month, making something a little bit better.

I'm extremely blessed because I travel extensively for my work, but I always try to incorporate a bit of leisure with business.

My four criteria: I don't want to work with people I don't like; I don't want to work in a business I either don't like or don't understand; I don't want to work for nothing unless I choose to, and I do a fair amount of that already; and I want to have some fun.

There's a danger of some of the best people saying, 'I don't want a career in science.'

When I first started out acting, I didn't have anything to lose. I had another career. If I fell on my face, I could say, 'I'll see ya,' and go back to working.