In the first section, Etienne Fouilloux describes the arc of Henri de Lubac's career up to the publication of his Surnaturel; Georges Chantraine, S.J., describes de Lubac's Surnaturel; Henry Donneaud, O.P., describes the early Thomistic response to the book; and Rene Mougel depicts Jacques Maritain's position on the topic. In the second section, focusing on Thomas Aquinas and the medieval period, Michel Bastit inquires into the relationship of Thomism to Aristotle; Jean-Miguel Garrigues explores the grace of Christ; Serge-Thomas Bonino, O.P., describes the variety of medieval positions on nature and grace as seen in theological accounts of limbo; and Jean-Pierre Torrell, O.P., masterfully summarises nature and grace according to Aquinas. The third section engages late-scholastic developments: Laurence Renault treats William of Ockham; Jacob Schmutz explores the shifting expositions of concurrence (divine and human causality) between the thirteenth and the seventeenth centuries; and Marie-Bruno Borde, O.C.D., presents the position of the Salmanticenses. Lastly, section four inquires into contemporary developments: Georges Cardinal Cottier, O.P., discusses natural mysticism and the theology of the religions; Gilbert Narcisse, O.P., traces the theme of grace in contemporary theology; Benoit-Dominique de La Soujeole, O.P., explores the situation of contemporary ecclesiology; and Bishop Andre-Mutien Leonard notes the value of the concept of; pure nature; within theological discussions.