Bill recommends:
The Weariness of Self by Alain Ehrenberg - Proposes that the modern requirement that people constantly refine, tailor and broadcast the self (see Twitter) has lead to the current epidemic of depression (soon to be the most common illness in the world). Most of us simply are not up to creating ourselves 24/7.
The End of History by William Irwin Thompson
The Economy of Cities by Jane Jacobs