A lot of times it's an asset to not know everything about everything... A lot of really great, innovative things have happened when people just didn't know it wasn't supposed to be possible.

You're not going to become a great manager overnight. You're not going to become a great public speaker or figure out how to raise money. These are the things you want to start the clock on as early as possible.

Surrounding yourself with inspiring people is now just as important as being talented or working hard.

One misconception is that entrepreneurs love risk. Actually, we all want things to go as we expect. What you need is a blind optimism and a tolerance for uncertainty.

I actually don't think it matters how early or late you are as long as you hit critical mass.

Where you live matters: there’s only one MIT. And there's only one Hollywood and only one Silicon Valley. This isn't a coincidence: for whatever you're doing, there's usually only one place where the top people go. You should go there. Don’t settle for anywhere else. Meeting my heroes and learning from them gave me a huge advantage. Your heroes are part of your circle too - follow them.

You have to adopt a mindset that says, 'Okay, in three months, I'll need to know all this stuff, and then in six months there's going to be a whole other set of things to know - again in a year, in five years.' The tools will change, the knowledge will change, the worries will change.