One of the keys to focus, and why I said cofounders that aren't friends really struggle, is that you can't be focused without good communication.

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

The best ideas often look terrible at the beginning the truly good ideas, don't seem like they're worth stealing.

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

A lot of people treat choosing their cofounder with even less importance than they put on hiring. Don't do this.

What being a founder means, is signing up for this years long grind on execution - and you can't outsource this.

Founders are usually very stingy with equity to employees and very generous with equity to investors. I think this is totally backwards.