Everyday people are not very good designers.

Design is really an act of communication, which means having a deep understanding of the person with whom the designer is communicating.

Our information lives will be better served when we are free to get to our information from wherever we are, with any device available.

The designer has an obligation to provide an appropriate conceptual model for the way that the device works. It doesn't have to completely accurate but it has to be sufficiently accurate that it will help in both the learning of the operation and also dealing with novel situations.

In the university, professors make up artificial problems. In the real world, the problems do not come in nice, neat packages. They have to be discovered.

Attractive things work better When you wash and wax a car, it drives better, doesn’t it? Or at least feels like it does.

When a device as simple as a door has to come with an instruction manual—even a one-word manual—then it is a failure, poorly designed.