Windows '98 is so similar to Windows '95 because Apple hasn't invented anything worth copying since 1995.

Even the best designers produce successful products only if their designs solve the right problems. A wonderful interface to the wrong features will fail.

On average, when you ask someone to perform a task on a site, they cannot do it. It's not their fault; it's the designer's fault.

Ultimately, users visit your website for its content. Everything else is just the backdrop.

People have to want to change before there's any chance of helping them do so.

Even though it is better if the system can be used without documentation, it may be necessary to provide help and documentation. Any such information should be easy to search, focused on the user's task, list concrete steps to be carried out, and not be too large.

...pay attention to what users do, not what they say.