Cultures are not very easy to change. They're sometimes almost impossible to change.

I took a job at the Walt Disney Company and after 18 months decided to go to business school at Harvard. I was awestruck by the campus. My first reaction was I dont belong here. Then I said, Im here; lets get on with it.

I'm not the kind of guy who dabbles in a lot of things.

I think challenge for Facebook is to develop a culture that has the advertiser and the ad service be as strong a part of their culture as the user obsession is.

Look at the world around you & imagine it in a better way.

My prediction is that in the same way that Google is an intent revealing service that can be monetized that way, I would think that if I were at Twitter, I would focus on the search aspect of Twitter, because people are revealing intents when they do a search.

I tried to do everything I could to study Walt Disney. I would read every book I could on the company, and then I found out more about him as a person, as an entrepreneur, and it was just fascinating to me that this guy was able to live a great life with his family but also do these amazing things at work.