The Best of All Possible Worlds

September 15, 2008
The centerpiece of this intellectual history is a vicious late–17th-century debate between three unlikely combatants: Leibniz, an amateur metaphysicist and German secret agent; Malebranche, a gentle French priest and theologian; and Arnauld, an ill-tempered and opinionated monk. The differences in their positions were slight but important: at stake was the very concept of God with potential implications for the territorial wars between various Catholic Church sects. Although the three men were concentrating on questions that had long been the subject of philosophical inquiry, new scientific discoveries were beginning to challenge the power invested in church and monarchy in what became a watershed moment. Nadler (Rembrandt’s Jews
) demonstrates why the contentious discussions between the three intellectuals remain relevant: “To the extent that one believes that there is a universal rationality and objectivity to moral and other value judgments, and that the foundations of ethics have nothing to do with what God may or may not want, one has followed in certain seventeenth-century footsteps.” Nadler’s superb study makes for a larger space for Leibniz, Malebranche and Arnauld alongside such giants of the period as Descartes and Spinoza.