Don't accept the excuse of complexity.

I walk into a company office and I can tell often whether I'm gonna invest, as soon as I walk in.

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.

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.

The office environment that people work in everyday dictates the culture that you are going to be in.

Don't accept the excuse of complexity. A lot of people will tell you, this is too challenging, this is too complicated, yeah well I know other people simplify but that's not for me, this is a complicated business. They're wrong. You can change the world in 140 characters.

It's never a metric, it's where the person is going or not. Metrics are used to make things work better, but don't necessarily make a business better.