One of the great and terrible things about starting a start up is that you get no credit for trying.

In YC experience, 2 or 3 co-founders seems to be about perfect.

Remember that you are more likely to die because you execute badly than get crushed by a competitor.

Most investors are obsessed with the market size today and they don't think about how the market is going to evolve.

Companies that I've been very involved with, that have had a very bad first hire in the first 3 or so employees never recover from it.

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

If you're not in college and you don't know a cofounder, the next best thing I think is to go work at an interesting company.