'The Philosophy of Symbiosis' by Kisho Kurokawa published in 1991
My wife found this book for me at a local second hand bookshop. Although I was intimidated by the book's title initially, I found myself enjoying this book very much. If you are interested in wabi-sabi, this book by a famous Japanese architect will give you a good idea about it. You can read the contents from his home page see http://www.kisho.co.jp/ *The article about wabi-sabi can be found in Chapter 5 'Hanasuki: The Aesthetic of Symbiosis'.
