Christopher Alexander is a builder, craftsman, general contractor, architect, painter, and teacher. He taught from 1963 to 2002 as Professor of Architecture at the University of California, Berkeley, and is now Professor Emeritus. He has spent his life running construction projects, experimenting with new building methods and materials, and crafting carefully articulated buildings- all to advance the idea that people can build environments in which they will thrive. Acting on his deeply held conviction that, as a society, we must recover the means by which we can build and maintain healthy living environments, he has lived and worked in many cultures, and built buildings all over the world. Making neighborhoods, building-complexes, buildings, balustrades, columns, ceilings, windows, tiles, ornaments, models and mockups, paintings, furniture, castings and carvings- all this has been his passion, and is the cornerstone from which his paradigm-changing principles have been derived. Professor Alexander is a fellow of the American Academy of Arts and Sciences. He received his doctorate in Architecture from Harvard University after completing degrees at Cambridge University in mathematics and architecture. He is the winner of the first medal for research awarded by the American Institute of Architects, a member of the Swedish Royal Academy, recipient of the Distinguished Professor Award from the American Association of Collegiate Schools of Architecture, and the recipient of the Vincent Scully Prize awarded by the National Building Museum in the US, among many other prestigious awards throughout his career. Christopher Alexander writes I believe we are on the threshold of a new era when the proper understanding of the deep questions of space, as they are embodied in architecture will play a revolutionary role in the way we see the world and will do for the world view of the 21st and 22nd centuries, what physics did for the 19th and 20th.