As I explain in the introduction, this is the third in aseries of collections of my previously published essays in legal theory. All of the essays here but three have been revised for this volume. I now wish to record my gratitude and indebtedness to various persons. I am most indebted and grateful to my wife, Dorothy Kopp Summers, to whom I dedicate this book. I also wish to re cord my gratitude for his interest and patience to Hendrik-Jan van Leusen of Kluwer Academic Publishers. He strongly encouraged me to put this collection together, and without his efforts, it certainly would not have appeared in this timely fashion. I also wish to thank his successor, Sabine Wesseldijk, for assistance. In the course of my academic career, I have benefitted greatly from the many Comell Law School students serving as my research assistants. I have also been privileged to have the fine aid of many Comell Law School secretaries and administrative assistants. Foremost here is Mrs. Pamela Finnigan who has so ably seen this collection put together from start to finish.