The single word that matters most I think to keep the company productive as it grows is alignment.

You have to be decisive. Indecisiveness is a startup killer.

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.

Because it's one of these sort of connections between nodes- every pair of people adds communication overhead.

You can have a startup and one other thing, you can have a family, but you probably can't have many other things.

The best source by far for hiring is people that you already know and people that other employees in the company already know.

Most of the best hires that I've made in my entire life have never done that thing before.