The book is less concerned with absolutist understandings of the two components of ethics, a theory of ‘the good’ and a theory of ‘the right’, than with remaining open to multiple relations between ideas about the built environment, design practices and the plurality of kinds of human subjects (inhabitants, individuals and communities) accommodated by buildings and urban spaces. The built environment contributes to the inculcation of all sorts of values (good and bad). Thus, this book aims to change the way people commonly think about ethics, not only in relation to the built environment, but to themselves, their ways of thinking and modes of behaviour.