This chapter outlines the structure and the main themes of the book. Part I will deal with the nature of providence and evil, including sin. Part II will outline the objective dimension of salvation, namely the saving efficacy of Christ, his death and resurrection. Part III will expound the subjective aspect of our salvation, that is, how we appropriate Christ’s saving work through the theological virtues and the sacraments. To do justice to Thomas’s understanding of salvation we need to be attentive to its realized-eschatological, interpersonal and symbolic emphases. We must also jettison dichotomies prevalent in modern scholarship: Thomas’s soteriology is both ontological and symbolical; it is interpersonal and yet makes allowances for the restoration of justice. In occupying the perhaps somewhat inhospitable region between a purely historical account of Thomas’s views and a constructive systematic-theological proposal, this book aspires to offer a readable introduction to central aspects of his theology from a contemporary perspective.