Aristotle, Kant, Marx, and Tabari are only a few of the many world thinkers whom Abul-Fazl Ezzati explores in his sweeping history and analysis of natural law. While this work distinguishes itself from other similar works by its detailed treatment of natural law in Islamic thought, it engages with both Islamic and Western discourse, with topics such as human rights, the inherent human nature, and rationality. The result is an insightful, all-encompassing treatment of human rights and the human being’s physical, rational, emotional, and spiritual needs.