Unfortunately the trick to great execution is to say no a lot.

Most investors are obsessed with the market size today and they don't think about how the market is going to evolve.

If you pivot, do it fully and with conviction. The worst thing is to try to do a bit of the old and the new-it's hard to kill your babies.

Keep salaries low and equity high. Keep the organization as flat as you can.

If you ever take your foot off the gas pedal, things will spiral out of control, snowball downwards.

You really want to know your cofounders for a while, ideally years.

Every thing at a startup gets modeled after the founders. Whatever the founders do becomes the culture.