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

Most things are not as risky as they seem.

You should be able to describe any employee as an animal at what they do.

If someone is getting every decision wrong, that's when you need to act, and at that point it'll be painfully aware to everyone.

There are 3 things I look for when I hire people. Are they smart? Do they get things done? Do I want to spend a lot of time around them?

... 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.

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.