". . . there is much to be learned from this very intelligent book. The author's insistence on the evidence for development in Thomas's understanding, his broad reading, his alertness to the interconnectedness of Thomas's ideas, and his willingness to grapple with the details of a text all combine to yield a wealth of insights. Wawrykow has gone a long way toward recovering the "essential spirit" of Thomas's motion of merit, and any serious discussion of the doctrine of merit or of Thomas's theology of grace will have to come to terms with his achievement." —The Thomist
“In his scholarly study God’s Grace and Human Action, Joseph Wawrykow seeks to remedy the failures of his predecessors. Wawrykow is sensitive to Aquinas’s intellectual development and offers useful insight into the reasons Aquinas altered his views as he matured as a theologian. What emerges is a ‘big picture’ of Aquinas’s discussions of grace and merit, not just as independent treatises, but as contributions to a larger theological project.” —Speculum, April 1999
"Recommended with great enthusiasm to historians of medieval and Reformation theology." —Religious Studies Review