Simplicity is not an absolute quality. It depends on our experience, knowledge, understanding, and skills. Simplicity: A Matter of Design offers a set of terms that will allow us to discuss simplicity in design with precision. It looks into the basics of simplicity and researches more in depth three aspects of design: functionality (simplicity for comfort), aesthetics (simplicity for pleasure) and ethics (simplicity for conscience). There is an extra chapter on simplicity in communication. If there is one quality all designers are seeking it is simplicity. Nevertheless, very little is written on the subject. Simplicity: A matter of design is a very clearly written and illustrated must read for students and practitioners who are intrigued by the concept of simplicity. Professor Per Mollerup is an experienced writer and teacher. With BIS Publishers he has published Wayshowing>Wayfinding on sign design.