A version of chapter 6 will appear in Philosophy and Social Criticism 33...

A version of chapter 6 will appear in Philosophy and Social Criticism 33:6 (2007), pp. 691-715. I would like to thank the editors of these publications for their permission to reprint this material. Finally, as always before and now again, I especially wish to acknowledge my wife, Elizabeth Amberg Livingston.

Without the conversations and experiences we have shared, this project would not have been possible; and beyond this, her constant love and support over the last four years have meant more than any language can say.…