The biggest PR hack you can do, is not hire a PR firm.

When lack of structure fails, it fails all at once. What works totally fine from 0-20 employees, is disastrous at 30.

In YC's case, the number one cause of early death for startups is cofounder blowups.

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

Remember that the idea will expand, and become more ambitious as you go.

It's easy to move fast or be obsessed with quality, but the trick is you have to do both at a startup.

Great execution is at least 10 times more important and a 100 times harder than a good idea.