For more than forty years, Richard Brandt's work has been at the cutting edge of research into the roles played by rationality, rules, and utility in developing a coherent account of normative ethics. In this volume of original essays, outstanding scholars critically examine and extend the most important aspects of his work. The value of these new contributions is enhanced by Brandt's detailed responses. Scholars of ethics, and of human behavior more generally, will find this book consistently stimulating and rewarding.