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.

Distribution may not matter in fictional worlds, but it matters in most. The Field of Dreams conceit is especially popular in Silicon Valley, where engineers are biased toward building cool stuff rather than selling it. But customers will not come just because you build it. You have to make this happen, and it's harder than it looks.

If people were super-optimistic about technology there would be no reason to be pessimistic about the future.

As you craft a plan to expand to adjacent markets, don't disrupt: Avoid competition as much as possible.

Recruiting is a core competency for any company. It should never be outsourced.

Twitter is hard to evaluate. They have a lot of potential. It's a horribly mismanaged company — probably a lot of pot-smoking going on there. But it's such a solid franchise it may even work with all that.

The road doesn’t have to be infinite after all. Take the hidden paths.