Both for the general public (short texts, architecture approached from simple concepts), but sharp enough (published by a university press, some 100 ideas are quite technical: the "classical orders": Doric, Ionic, Corinthian, and the perspective drawing techniques) this book may be of interest almost everyone and probably provides an attractive but concrete light on the constraints that guide architects, a way to light without discouraging many students contemplating studies architecture without knowing in the least what you are talking in a school of architecture.