From St. Clement of Alexandria to St. Augustine of Hippo, the texts that we present, in three languages (Italian, English, and French) and with some differences in the content (the languages do not consistently have the same authors), are intended to help men and women of the twenty-first century to deepen the unchanging truths related to the state of married life and the family. The Fathers of the first four centuries after Christ sought, with diligence and passion, to translate these truths into practical advice, in order to improve the daily relationships inside and outside the family, at a time that, in some ways, has much in common with ours.