An enduring theme of Western philosophy is that we are all one anothers equals. Yet the principle of basic equality is woefully under-explored in modern moral and political philosophy. In a major new work, Jeremy Waldron attempts to remedy that shortfall with a subtle and multifaceted account of the basis for the Wests commitment to human equality. What does it mean to say we are all one anothers equals? Is this supposed to distinguish humans from other animals? What is human equality based on? Is it a religious idea, or a matter of human rights? Is there some essential feature that all human beings have in common? Waldron argues that there is no single characteristic that serves as the basis of equality.He says the case for moral equality rests on four capacities that all humans have the potential to possess in some degree: reason, autonomy, moral agency, and the ability to love. But how should we regard the differences that people display on these various dimensions? And what are