A CEO needs great intelligence and great courage. And I always found my courage was tested more.

The thing that's confusing for investors is that founders don't know how to be CEO. I didn't know how to do the job when I was a CEO. Founder CEOs don't know how to be CEOs, but it doesn't mean they can't learn. The question is... can the founder learn that job and can they tolerate all mistakes they will make doing it?

The bigger you get, the harder this gets because the more aggressive the people working for you are.

The important thing about mobile is, everybody has a computer in their pocket. The implications of so many people connected to the Internet all the time from the standpoint of education is incredible.

Startup CEOs should not play the odds. When you are building a company, you must believe there is an answer and you cannot pay attention to your odds of finding it. You just have to find it. It matters not whether your chances are nine in ten or one in a thousand; your task is the same.

There are no shortcuts to knowledge, especially knowledge gained from personal experience. Following conventional wisdom and relying on shortcuts can be worse than knowing nothing at all.

A key thing in being a leader is you’ve got to pause yourself.