
The purpose of all architecture, writes Christopher Alexander, is to encourage and support life-giving activity, dreams, and playfulness. But in recent decades, while our buildings are technically better--more sturdy, more waterproof, more energy efficient-- they have also became progressively more sterile, rarely providing the kind of environment in which people are emotionally nourished, genuinely happy, and deeply contented. Using the example of his building of the Eishin Campus in Japan, Christopher Alexander and his collaborators reveal an ongoing dispute between two fundamentally different ways of shaping our world. One system places emphasis on subtleties, on finesse, on the structure of adaptation that makes each tiny part fit into the larger context. The other system is concerned with efficiency, with money, power and control, stressing the more gross aspects of size, speed, and profit. This second, "business-as-usual" system, Alexander argues, is incapable of creating the kind of environment that is able to genuinely support the emotional, whole-making side of human life. To confront this sterile system, the book presents a new architecture that we--both as a world-wide civilization, and as individual people and cultures--can create, using new processes that allow us to build places of human energy and beauty.
If you want to go deep his magnus opus is "Nature of Order". It's transcendent.
I also recommend looking at works by Salingaros and Mehaffy like Design for a Living Planet, Principles of Urban Structure, and Unified Architecture Theory.
I do second the recommendation to read the other works as well. If pairing one book with Pattern, I would choose The Battle for the Life and Beauty of the Earth because it most clearly portrays the process of taking Alexander’s thinking into the real world and overcoming its perverse incentives to impose ugliness and financial difficulty. I gave a talk for a bunch of developers immediately after reading it because it mapped so well to what we do and struggle with.
I recently bought The Battle for the Life and Beauty of the Earth. Within the first 2 pages I was already hooked. But in fairness, It's because I think we are two minds alike so I hardly disagree with him... which I think it's bad.