Offering a fresh approach to one significant aspect of the soteriology of Thomas Aquinas, God’s Grace and Human Action brings important scholarship and insight to the issue of merit in Aquinas’s theology. Through a careful historical analysis, Joseph P. Wawrykow delineates the precise function of merit in Aquinas's account of salvation, revealing that the attainment of salvation through merit testifies not only to the dignity of the human person but even more to the goodness of God.