You generally know when someone asks you to do something- am I more writing, or am I more editing? The editor is the best metaphor for your job.

Some people can't learn to play the guitar by reading a book. You have to actually try to manage a bit and you won't do well at first.

The companies I have traditionally seen do best over the long term had lead investors for their seed rounds

You really need to spend a lot of your time focussing people.

You need to simplify the value proposition in the company's metrics for success on a whiteboard.

The most important job of an editor is simplify, simplify simplify, and that usually means omitting things.

There are three things you need to do as a CEO-founder. Think strategically, drive design, and drive technology. Some people who are really good at one can build a pretty foundational company. Most people who are very successful are good at two. But Jack is the only person in the Valley I've met who's all three. He's a first-rate strategist, a first-rate designer, and a first-rate technologist.