Acclaimed by Christianity Today as one of its Books of the Year, Written on the Heart is a masterful exploration of the natural law tradition. With a clarity that never falters, an eloquence that is frequent and compelling, and a humor that is occasional but effective, J. Budziszewski provides a primer for students and a robust argument for scholars. The book delves into the works of the greatest minds in the field, including Aristotle, Thomas Aquinas, and John Locke, while also engaging with contemporary philosophy, theology, and political science. In a bold move, Budziszewski challenges the prevailing pluralism of our time, which often finds natural law difficult to accept. Throughout the volume, he skillfully conveys the subtlety, richness, and intellectual surprise of the natural law tradition, making a powerful case for its relevance and importance.