... for the top twenty most valuable YC companies, all of them have at least two founders.

You have to let your team get all the credit for all the good stuff that happens, and you take responsibility for the bad stuff.

At the beginning, you should only hire when you have a desperate need to.

If someone is choosing between joining McKinsey or your startup it's very unlikely they're going to work out at the startup.

There are exceptions of course, but most companies start with a great idea - not a pivot.

The biggest PR hack you can do, is not hire a PR firm.

Most great companies in tech have been built by personal referrals for the first...at least 100 employees and often many more.