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.

There's no way I know, to get through the pain of a startup without belief that the mission really matters.

... the thing we see wrong with YC apps most frequently, is that people have not thought about the market first and what people want first.

You need to figure out what the 2 or 3 most important things are, and then just do those.

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

... how much time you should be spending on hiring? The answer is 0 or 25 percent.

You think you have this great idea that everyone's going to come join, but that's not how it works.