You want to do things you’re passionate about but also are useful to other people.

If you're co-founder or CEO, you have to do all kinds of tasks you might not want to do. If you don't do your chores, the company won't succeed. No task is too menial.

Facebook is quite entrenched and has a network effect. It's hard to break into a network once it's formed.

Selling an electric sports car creates an opportunity to fundamentally change the way America drives.

No I don't ever give up. I would have to be dead or completely incapacitated

I do think there is a lot of potential if you have a compelling product and people are willing to pay a premium for that. I think that is what Apple has shown. You can buy a much cheaper cell phone or laptop, but Apple's product is so much better than the alternative, and people are willing to pay that premium.

The key test for an acronym is to ask whether it helps or hurts communication.