286 quotes from Donald A. Norman: 'Design is really an act of communication, which means having a deep understanding of the person with whom the designer is communicating.', 'Good design is actually a lot harder to notice than poor design, in part because good designs fit our needs so well that the design is invisible,', and 'Principles of design: 1. Use both knowledge in the world and knowledge in the head. 2. Simplify the structure of tasks. 3. Make things visible: bridge gulfs between Execution and Evaluation. 4. Get the mappings right. 5. Exploit the power of constraints. 6. Design for error. 7. When all else fails, standardize.'