You also want to fire people who a) create office politics, and b) who are persistently negative.

... fire fast when it's not working. It's better for the company, it's also better for the employee.

Most startups are not nearly focussed enough. They work hard...maybe, but they don't work hard on the right things.

Here's a good rule of thumb: don't worry about a competitor at all, until they're actually beating you with a real shipped product.

In addition to relentlessly resourceful, you want a tough and a calm cofounder.

These all sounded really bad, but they turned out to be good. If they had sounded really good, there would have been too many people working on them.

Most good founders that I know at any given time have a set of small overarching goals for the company that everybody in the company knows.