Cultures that don't laugh at themselves are cults.

Part of the excitement was just seeing how the world would respond. I kind of like uncertainty to some extent, because it's a little bit of suspense and excitement and adventure, almost, right? And you can learn a lot even if things don't work out. But not everyone likes adventure. A lot of people seem to be against uncertainty, actually. In all areas of life.

Cultures that don't laugh at themselves are cults.

Start out by making 100 users really happy, rather than a lot more users only a little happy.

Pick three key attributes or features, get those things very, very right, and then forget about everything else… By focusing on only a few core features in the first version, you are forced to find the true essence and value of the product.

Email is not going to disappear. Possibly ever. Until the robots kill us all.

Bitcoin may be the TCP/IP of money.