A Pattern Language

by Christopher Alexander

Alexander and his co-authors present us with over two hundred (roughly 250) "patterns" that they believe must be present in order for an environment to be pleasing, comfortable, or in their words, "alive." The patterns start at the most general level -- the first pattern, "Independent Regions," describes the ideal political entity, while another of my favorite patterns, "Mosaic of Subcultures," described the proper distribution of different groups within a city. The patterns gradually become mor