Zadig is a philosopher in ancient Babylonia. Voltaire did not attempt historical accuracy with this book. Many of the problems Zadig faces are thinly disguised references to social and political problems of Voltaire's own day. Zadig is philosophical in nature, and presents human life as being beyond human control. It is a story of religious and metaphysical orthodoxy, both of which Voltaire challenges with his presentation of the moral revolution taking place in Zadig himself.