Augustine of Hippo, indisputably one of the most important figures for the study of memory, is credited with establishing memory as the inner source of selfhood and locus of the search for God. Yet, those who study memory in Augustine have never before taken into account his preaching. His sermons are the sources of memory's greatest development for Augustine. In Augustine's preaching, especially on the Psalms, the interior gives way to communal exterior. Both the self and search for God are re-established in shared identity and the communal labor of remembering and forgetting. Augustine on Memory presents this new paradigm not only for Augustinian studies, but also for theologians, philosophers, ethicists, and interdisciplinary scholars of memory.