Bruno Latour, The Making of Law.
http://www.bruno-latour.fr/
Slavo Zizek, In Defense of Lost Causes OR
Zizek, Violence
http://books.google.com/books?
Martha Nussbaum, Woman and Human Development (Capabilities theory)
http://books.google.com/books?
Rebecca Solnit, Wanderlust: A History of Walking
I am a partial Solnit fan, but think a walking focused book could be good. Suggestions?
Glenn Adamson, The Craft Reader
Buckminster Fuller, Critical Path
something by Walter Benjamin? (that you've not done already?)
Lewis Hyde: Trickster makes this world mischief myth and art
Nature of design
by David W. Orr
http://ukcatalogue.oup.com/
Earth in mind: on education, environment, and the human prospect
by David W. Orr
http://books.google.com/books?
The Gift of Good Land
by Wendell Berry
http://books.google.com/books?
Kinship to Mastery: Biophilia in Human Evolution and Developments
by Stephan R. Kellert
http://books.google.com/books?
One Straw Revolution
by Masanobu Fukoka
http://books.google.com/books?
Why we Garden: Cultivating a sense of place
By Jim Nollman
http://books.google.com/books?By Jim Nollman
The Language of Landscape
By Anne Whiston Spirn
http://books.google.com/books?By Anne Whiston Spirn