We are very grateful to Helmut Leitner for allowing us to use his figures in Chapter 20. Elsewhere, we have used images in the public domain found on the world-­‐wide web and have attempted to identify their source to the best of our knowledge. We apologize for any omissions. All other figures are our own.

Portions of chapters 6, 7, and 9–12 were previously published in the book Unified Architectural Theory (Sustasis Press, Portland and Vajra Publishers, Kathmandu, 2013). Reproduced here with permission.

The Appendix to Chapter 3 is a revised version of an article that appeared on ArchDaily in 2013. Thanks to editor Vanessa Quirk for her courtesy.

The Spanish version of Jorge Luis Borges’ one-­‐paragraph essay “On Exactitude in Science” is reproduced from the public domain. It was first published under the pseudonym B. Lynch Davis in the March 1946 edition of Los Anales de Buenos Aires, Año 1, No. 3 as part of a piece called “Museo”. It was subsequently included in the collection of essays entitled El Hacedor (Alianza Editores, Buenos Aires, Argentina, 1960). English translation by one of the authors (N.A.S.) was especially prepared for this book.

Colophons drawn by Nikos A. Salingaros.

Finally, our thanks to editor Susan Szenasy and Metropolis Magazine, who published serialized chapters from this book, where they found a wide readership.