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

One of the pieces of advice that we give at YC is: try to work together on a project rather than just doing an interview.

You can't be focussed without really great communication

When it comes to starting startups, in many ways, it's easier to start a hard startup than an easy startup.

Before 20 or 25 employees, most companies are structured with everyone reporting to the founder. It's totally flat.

Most great companies in tech have been built by personal referrals for the first...at least 100 employees and often many more.

A board member of mine used to say sales fix everything in a startup, and that is really true.