Speth is someone who writes books I consider seminal. I stayed up until 2 am reading his latest book "Bridge at the Edge of the World: Capitalism, Environment and Crossing the Crisis to Sustainability." I like happy endings so I flipped to the back of the book for the answers.
Reading all these different sustainability perspectives was like looking at Michaelangelo's David sculpture in Florence. It never looses the beauty or intrigue for me. Sustainability, an art form?
Michaelango said he could look at a block from the quarry and "see" the figure that needed to be released from it. I think sustainability is like that. It is inside all of us waiting for the ignorance and apathy to be chipped away to reveal a beautiful world. At least, this is my hope.