By the time a student gets to college, he's spent a decade curating a bewilderingly diverse résumé to prepare for a completely unknowable future. Come what may, he's ready-for nothing in particular.

There are quite a lot of people who think my aspirations are not possible. That's a good thing. We don't need to really worry about these people very much, because since they don't think it's possible they won't take us very seriously- and they will not actually try to stop us until it's too late.

If they don't go to law school, bright college graduates head to Wall Street precisely because they have no real plan for their careers.

By the time a student gets to college, he's spent a decade curating a bewilderingly diverse résumé to prepare for a completely unknowable future. Come what may, he's ready-for nothing in particular.

When you already have $150 billion a year in revenues from the iPhone, it's very hard to come up with any new vertical that will sort of move the dial. And there's this sort of weird effect where the larger a company gets, the harder it is to come up with any new product that really moves the dial.

There is perhaps no specific time that is necessarily right to start your company or start your life. But some times and some moments seem more auspicious than others. Now is such a moment. If we don’t take charge and usher in the future - if you don’t take charge of your life - there is the sense that no one else will.

There's been a lot companies that have shown "zero to one" kind of growth in the computer, internet software age. Facebook and Google are zero to one companies. Apple's iPhone was the first smartphone that really works, and of course, then you scale it horizontally, but the vertical component was really critical. Space X would also be one.