You should always know how you're doing against your metrics. You should always have a weekly review meeting every week.

Even though plans themselves are worthless, the exercise of planning is very valuable and totally missing in most startups today.

It's better to have no cofounder than to have a bad cofounder, but it's still bad to be a solo founder.

The role of the board is advice and consent. If the CEO does not lay out a clear strategy and tries to get the board to set one, it will usually end in disaster.

You cannot create a market that doesn't want to exist.

It's really easy to get PR with no results & it actually feels like you're really actually cool, but in a year you'll still have nothing.

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