About the book: 1997 / Ambrosius Mediolanensis (about 340 - 4.4.397), Bishop of Milan (Mediolanum) from 374; preacher, theologian (recognized by the Catholic Church as the father of the church), church politician. In 370-374 governor of Liguria and Emilia (with residence in Milan). Having accepted the episcopal rank, in a number of conflicts with the imperial authorities he defended the interests of the Christian Church. In his most significant work (“On the Duties of the Clergy,” Russian translation, 1908), A. outlines a system of Christian ethics. He fought against paganism and Arianism. He composed church hymns; established the foundations of ritual singing in the Western Christian church (the so-called Ambrosian singing).