Identity and difference (or sameness and otherness) are contrasting but interrelated terms that have played an explicit role in the development of Western philosophy at least since Plato wrote the Sophist. As Plato pointed out then, and Hegel reiterated more recently in his Science of Logic, the proper comprehension of these terms, and particularly of their interrelation, plays a fundamental role in shaping our conception of philosophical reason itself. The contributors in this book examine Hegel's treatment of these terms, and the role they play in structuring his philosophical system as a whole and also in shaping his conception of dialectical reasoning.