I'll let you in on a secret: every person who runs a company is egotistical. It's not possible to run a company otherwise. You've got to have confidence in yourself and your ideas.

Of course, some hide it more assiduously than others. I don't mind Musk boasting. He earned it. It's more refreshing than the fake modesty of others.

A CEO friend of mind once called me up all worried because someone called him arrogant. I told him of course you're arrogant. He was shocked. I laughed, and told him to look at his accomplishments - who but an arrogant person would ever have even attempted those things!