Complexity is acceptable as long as it is intelligible and necessary. We want to avoid needless complications.

A big ethical question is what happens after people stop using the device. Does it degrade the environment? Could it have been designed so it would actually be good for the environment?

The best kind of design isn't necessarily an object, a space, or a structure: it's a process- dynamic and adaptable.

How do you discover a need that nobody yet knows about? This is where the product breakthroughs come through.

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

A challenge to the designers of the world: Make signs unnecessary.

Learning should take place when it is needed, when the learner is interested, not according to some arbitrary, fixed schedule