The track record for founders that don't already know each other is really bad.

Every first time founder waits too long, everyone hopes that an employee will turn around. But the right answer is to fire fast.

As the company grows and about this 25 or so employee size, your main job shifts from building a great product to building a great company.

To get the very best people- they have a lot of great options, and so it can easily take a year to recruit someone.

I prefer to invest in a company that's going after a small but rapidly growing market than a big but slow growing one.

In general, it's best if you're building something that you yourself need.

Ideas by themselves are not worth anything, only executing well is what creates value.