An idea isn't worth that much. It's the execution of the idea that has value. If you can't convince one other person that this is something to devote your life to, then it's not worth it.

Watching nonprogrammers trying to run software companies is like watching someone who doesn’t know how to surf trying to surf. Even if he has great advisers standing on the shore telling him what to do, he still falls off the board again and again.

Every day that we spent not improving our products was a wasted day.

Never put yourself in a position that will put yourself at risk if you make the wrong decision. We spent cash on everything. It's fashionable to make 'bet the company' decisions, but don't do it.

Shipping is a feature. A really important feature. Your product must have it.

A user interface is well-designed when the program behaves exactly how the user thought it would.

Writing code is not production, it's not always craftsmanship though it can be, it's design.