Alberto Hurtado, SJ, is a saint of our time. His thought emerged from the intellectual and political currents of his time, yet his writings foreshadow the papal and Society documents on social justice that form the basis of our ministries today. This volume is an annotated translation of St. Alberto Hurtado, SJ, work: Moral Social. Working late at night during the last years of his life, Hurtado produced the rough typescript of this book, in which condition it remained after his death in 1952 until the Pontificia Universidad Católica de Chile published the first Spanish edition in 2004 and a second edition in 2006. This is the first English translation.