Users do not care about what is inside the box, as long as the box does what they need done.

Once the product's task is known, design the interface first; then implement to the interface design.

An interface is humane if it is responsive to human needs and considerate of human frailties.

When you have to choose among methods, your locus of attention is drawn from the task and temporarily becomes the decision itself.

I am only a footnote, but proud of the footnote I have become. My subsequent work on eliciting principles and developing the theory of interface design, so that many people will be able to do what I did is probably also footnote-worthy. In looking back at this turn-of-the-century period, the rise of a worldwide network will be seen as the most significant part of the computer revolution.

The system should treat all user input as sacred.

What users want is convenience and results.