This book is about the problem of truth: what truth is, and how we can tell whether what we have said is true. Bruce Marshall approaches this problem from the standpoint of Christian theology, and especially that of the doctrine of the Trinity. The book offers a full-scale theological account of what truth is and whether Christians have adequate grounds for regarding their beliefs as true. Unlike most theological discussions of these issues, the book is also extensively engaged with the modern philosophical debate about truth and belief.

Explores the sacramental theology, lived spirituality, and Eucharistic poetry of the Church's doctor communis, St. Thomas Aquinas. Although Aquinas' Eucharistic poetry has long occupied an important place in the Church's liturgical prayer and her repertoire of sacred music, the depth of these poems remains hidden until one grasps the rich sacramental theology underlying it.