It's better to have a few users love your product than for a lot of users to sort of like it.

The most common post YC failure case for the companies we fund, is they're incredibly focussed during YC on their company... and after they start doing a lot of other things. They advise companies, they go to conferences, whatever.

AirBnB spent 5 months interviewing their first employee, before they hired someone and in their first year, they only hired 2 people.

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

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

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.

In general don't start a startup you're not willing to work on for ten years.