So always keep momentum, it's this prime directive for managing a startup.

If you compromise and hire someone mediocre you will always regret it.

Aim to be the best in the world at whatever you do professionally. Even if you miss, you'll probably end up in a pretty good place.

It's difficult to get large groups of people, to the extreme levels of focus and productivity that you need, for a startup to be successful.

If you want something in a deal, just ask for it.

I care much more about the growth rate of the market than it's current size and I also care if there's any reason it's going to top out.

... for the top twenty most valuable YC companies, all of them have at least two founders.