In his treatise, De Reductione Artium ad Theologiam, a work of remarkable brevity and originality of expression, St. Bonaventure deals with the relation of the finite to the infinite, of the natural to the supernatural in a way which well establishes his preeminence as a mystic, a philosopher, and a theologian. This translation and commentary brings to the modern day reader an appreciation of the return of all created things to God.