The natural state of a start-up is to die; most start-ups require multiple miracles in their early days to escape this fate.

Long term thinking is so rare anywhere, but especially in startups. This is a huge advantage if you do it.

You have to be intense. This only comes from the CEO, this only comes from the founders.

Every first time founder waits too long, everyone hopes that an employee will turn around. But the right answer is to fire fast.

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.

These all sounded really bad, but they turned out to be good. If they had sounded really good, there would have been too many people working on them.

If it works out, you're going to be working on this for 10 years.