The was written by St. Augustine to supply a well-educated Roman layman with a brief but comprehensive exposition of the essential teachings of Christianity. It contains many of Augustine's most profound thoughts on sin, grace, and predestination, and might surprise modern readers with its emphasis on a reasoned, intellectual approach to faith. (a term that comes from the Greek for "handbook") is an indispensable guide to understanding St. Augustine and is, in itself, a catechism for readers seeking an appreciation of early Christianity. Now with a new introduction by Boston College professor of philosophy, Thomas Hibbs.