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.

Foursquare's adoption of a game dynamic when it launched is a particularly clever implementation of a social hook.

Customers are a great way to finance a business for many reasons. First, customer financing is typically non dilutive. They want something from you other than equity in your business. Customers also help you fit your product to the market. And customers will help debug and improve the quality of the product.

I don't like to talk about myself. I like to talk about stuff that's happening, stuff that's going to happen, and the people who are going to make it happen.

The entire world is now a rival to Silicon Valley. No country, state, region, nor city has a lock on innovation in technology anymore.

When my dad was in Vietnam, we lost a parent for a year. Thank God we didn't lose a parent for good.

I believe the mobile OS market will play out very similarly to Windows and Macintosh, with Android in the role of Windows. And so if you want to be in front of the largest number of users, you need to be on Android.