In all the difficult decisions that I made through the course of running Loudcloud and Opsware, I never once felt brave. In fact, I often felt scared to death. I never lost those feelings, but after much practice, I learned to ignore them. That learning process might also be called the courage development process.

In my experience as CEO, I found that the most important decisions tested my courage far more than my intelligence.

Big companies have trouble with innovation. Innovation is about bad ideas, or ideas that look like bad ideas. That's the fundamental thing.

Leadership is hard to train on.

I know I can fight. I know I have kicks that can destroy people. Just because I haven't gotten in the ring in my career, that doesn't mean I'm not capable of crushing people.

I certainly hope they let me make another 'Doctor Strange.' I would do it in a second. I love this character. It's been the best filmmaking experience of my career; I work really well with these guys. It was a rewarding, collaborative process that I would do again in a second.

If you can build your career around your passions, then you're winning in life; that's one of the best things you can ask for.

Being an entrepreneur is tough. Really, really tough.