Scrinium Augustini. The World of Augustine's Letters contains proceedings from the international symposium on Augustine's correspondence held at the Nicolaus Copernicus University in Torun (Poland) on 25-26 June 2015, which was a part of a wider project dedicated to the study of Augustine's correspondence. Another part of the project is a fully searchable on-line catalogue of issues present in the Letters (www.scrinium.umk.pl). The papers presented in the book access the large corpus of Augustine's epistles from various academic perspectives (theological, philosophical, historical, literary and rhetorical). First, the present study is thematically more wide-ranging than any of those that had been previously published on this subject; second, it is interdisciplinary in its focus and methodology; third, it provides new, substantial insights into selected problems of Augustine's work; fourth, it approaches the Letters from two complementary, methodological perspectives: the first part of the book contains papers which study widely defined problem in the light of the whole corpus, while those in the second part deal with specific problems found in particular letters. The result is a significant contribution to our understanding of the complex and fascinating Augustinian world, seen through the lens of his letters, made by authors whose academic experience and scholarly achievements guarantee its quality.