This book covers a wide spectrum of connected topics in the field of practical and moral thinking. It contains papers and discussions on the logic of practical reasoning and moral obligation; on the decision-theoretical approach to morality; on the relation between practical and theoretical reason; and on the political aspects of morality. The contributors are, for the most part, well-known philosophers who have not been content with merely restating their positions, but have sued this as a forum for proposing new ideas. The value of the collection lies not only in the originality of the contributions on the various topics mentioned but equally in its demonstration of the interrelations among these topics.