Being a venture capitalist to me is like being more of a psychologist. So if you come to my office we have two chairs with a table in the middle. And we sit down and it's like, Tell me your problems.

You can build the most important companies in history with a very simple to describe concept. You can market products in less than 50 characters. There is no reason why you can't build your company the same way. So force yourself to simplify every initiative, every product, every marketing, everything you do. Basically take out that red and start eliminating stuff.

If the Martians took over eBay it would take 6 months for the world to notice.

Most people will solve the problems they know how to solve. Roughly speaking they will solve B+ problems instead of A+ problems. A+ problems are high impact problems for your company but they're difficult problems.

The key to culture is it's a framework for making decisions. And if it's baked into your culture, people learn how to make decisions across that culture without you ever saying anything. You never have to really do anything except watch and promote and move people around.

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.

Most people, most great people even are ammunition. But what you need in your company are barrels. You can only shoot through the number of unique barrels you have, so that's how the velocity of your company improves... is by adding barrels, and then you stock them with ammunition and then you can do a lot.