As the first comprehensive encyclopedic survey of Western architectural theory from Vitruvius to the present, this book is an essential resource for architects, students, teachers, historians, and theorists. Using only original sources, Hanno-Walter Kruft undertook the monumental task of researching, organizing, and analyzing the significant statements put forth by architectural theorists over the last two thousand years. The result is a text that is authoritative and complete, easy to read without being reductive. From Philip Tabor of Architectural Review, “I am as astonished to find this book written, so great was the scholarship and labor involved, as I am to find it previously unwritten, so great is the need for it. Its scale and scope is unique.”