Dietrich von Hildebrand (1889-1977) es uno de los mayores exponentes de la ética fenomenológica de los valores. Formado con Husserl y Scheler, desarrolló su propio pensamiento moral desde la idea del valor y de la respuesta de la persona a él, con el horizonte de la ética y la revelación cristianas. Tras exponer los fundamentos de su filosofía sobre todo en su Ética, Hildebrand escribe, ya al final de su vida, este volumen de escritos morales (Moralia). En él continúa y complementa sus ideas de forma detallada y clara, como se ve bien por su pormenorizado índice, con su acostumbrado estilo a la vez profundo y sencillo. Así, este texto presenta asequiblemente la exposición más completa de la ética de este conocido una propuesta moral que trata tanto de bienes y valores como de virtudes y deberes, nutrida y avalada además por numerosas descripciones de la experiencia ordinaria, de la que no excluye las experiencias de la vida cristiana.
Dietrich von Hildebrand was a German Catholic philosopher and theologian who was called (informally) by Pope Pius XII "the 20th Century Doctor of the Church."
Pope John Paul II greatly admired the work of von Hildebrand, remarking once to von Hildebrand's widow, Alice von Hildebrand, "Your husband is one of the great ethicists of the twentieth century." Pope Emeritus Benedict XVI has a particular admiration and regard for Dietrich von Hildebrand, whom he already knew as a young priest in Munich. In fact, as young Fr. Ratzinger, he even served as an assistant pastor in the church of St. Georg in Munich, which von Hildebrand frequented in the 1950s and 1960s. It was also in St. Georg that Dietrich and Alice von Hildebrand were married.
The degree of Pope Benedict's esteem is expressed in one of his statements about von Hildebrand, "When the intellectual history of the Catholic Church in the twentieth century is written, the name of Dietrich von Hildebrand will be most prominent among the figures of our time." Von Hildebrand was a vocal critic of the changes in the church brought by the Second Vatican Council. He especially resented the new liturgy. Of it he said "Truly, if one of the devils in C.S. Lewis' The Screwtape Letters had been entrusted with the ruin of the liturgy, he could not have done it better."
Von Hildebrand died in New Rochelle, New York, in 1977.