Code as if the next guy to maintain your code is a homicidal maniac who knows where you live.

Make the right things easy and the wrong things hard to do.

It does not matter how awesome your product is or your presentation or your post. Your awesome thing matters ONLY to the extent that it serves the user's ability to be a little more awesome.

The best user experiences are enchanting. They help the user enter an alternate reality, whether it's the world of making music, writing, sharing photos, coding, or managing a project.

Code as if the next guy to maintain your code is a homicidal maniac who knows where you live.

Give users what they actually want, not what they say they want. And whatever you do, don't give them new features just because your competitors have them!

Just make people better at something they want to be better at.