Pope Pius XII was head of the Catholic Church and sovereign of the Vatican City State from 2 March 1939 until his death in October 1958. Before his election to the papacy, he served as secretary of the Department of Extraordinary Ecclesiastical Affairs, papal nuncio to Germany, and Cardinal Secretary of State, in which capacity he worked to conclude treaties with various European and Latin American nations, including the Reichskonkordat treaty with the German Reich.
An encyclical was originally a circular letter sent to all the churches of a particular area in the ancient Roman Church. At that time, the word could be used for a letter sent out by any bishop. The word comes from the Late Latin encyclios. The term is now primarily associated with papal encyclicals.
Mystici Corporis Christi(The Mystical Body of Christ) is an encyclical issued by Pope Pius XII on 29 June 1943 during World War II. Its main topic is the Catholic Church as the Mystical Body of Christ.
Summi Pontificatus is an encyclical of Pope Pius XII published on 20 October 1939. The encyclical is subtitled "on the unity of human society". It was the first encyclical of Pius XII and was seen as setting a tone for his papacy. It criticizes what it saw as major errors of the time, such as ideologies of racism, cultural superiority, and the totalitarian state. It also sets the theological framework for future encyclical letters such as Mystici corporis Christi (1943). The encyclical laments the occupation of Poland, denounces the Molotov–Ribbentrop Pact, and calls for a restoration of independent Poland.
Mediator Dei is a papal encyclical issued by Pope Pius XII on 20 November 1947. It was the first encyclical devoted entirely to liturgy.
Datis nuperrime is an encyclical of Pope Pius XII dated 5 November 1956 concerning the Soviet invasion of Hungary to suppress the Hungarian Revolution of 1956. This is a second encyclical protesting the oppression of the Hungarian people. Pope Pius, as in his previous protests, does not mention the Soviet Union by name.
Auspicia quaedam is an encyclical of Pope Pius XII on worldwide public prayers to the Virgin Mary for World peace and the solution to the occupation of Palestine.
Meminisse iuvat is an encyclical of Pope Pius XII, asking for prayers for the persecuted Church in the East and criticizing harmful cultural developments in the West. He asks for a novena of prayer preceding the feast of the Assumption.
Orientales ecclesias is an encyclical of Pope Pius XII concerning the persecution of the Eastern Catholic Churches and describing the desperate situation of the faithful in Communist Bulgaria.
Pope Pius XII and Russia describes relations of the Vatican with the Soviet Union, Russia, the Eastern Orthodox Church, and the Eastern Catholic Churches resulting in the eradication of the Church in most parts of the Soviet Union during the Stalinist era. Most persecutions of the Church occurred during the pontificate of Pope Pius XII.
Ad Caeli Reginam is an encyclical of Pope Pius XII, given at Rome, from St. Peter's Basilica, on the feast of the Maternity of the Blessed Virgin Mary, the eleventh day of October, 1954, towards the end of the Marian year, in the sixteenth year of his Pontificate. The encyclical is an important element of the Mariology of Pope Pius XII. It established the feast Queenship of Mary.
Fulgens corona is an encyclical by Pope Pius XII, given at St. Peter's, Rome, on 8 September 1953, the Feast of the Nativity of the Blessed Virgin Mary, in the fifteenth year of his Pontificate. The encyclical proclaims a Marian year for 1954, to commemorate the centenary of the definition of the dogma of the Immaculate Conception of the Virgin Mary.
Ingruentium malorum is an encyclical of Pope Pius XII on reciting the rosary, issued on September 15, 1951, the Feast of the Seven Sorrows of the Virgin Mary:
It is an appeal for an intensification of the traditional October Rosary devotions, making a particular recommendation for the family recitation of the Rosary, begging Our Lady to obtain peace for individuals, for families, for peoples, for nations, and for the Church throughout the world.
The Mariology of the popes is the theological study of the influence that the popes have had on the development, formulation and transformation of the Roman Catholic Church's doctrines and devotions relating to the Blessed Virgin Mary.
Communium interpretes dolorum is an encyclical by Pope Pius XII stating an urgent need for World War II to end, appealing for prayers for peace during the month of May, 1945. It was delivered in Rome, at St. Peter's Basilica on Sunday, 15 April 1945, in the seventh year of his pontificate.
Le pèlerinage de Lourdes is the only encyclical of Pope Pius XII issued in French. It includes warnings against materialism on the centenary of the apparitions at Lourdes. It was given at Rome, from St. Peter's Basilica, on the feast of the Visitation of the Most Holy Virgin, July 2, 1957, the nineteenth year of his pontificate.
Eastern Catholic victims of Soviet persecutions include bishops and others among the tens of thousands of victims of Soviet persecutions from 1918 to approximately 1980, under the state ideology of Marxist–Leninist atheism.
The relations between Pope Pius XII and Judaism have long been controversial, especially those questions that surround Pope Pius XII and the Holocaust. Other issues involve Pius's Jewish friendships and his attitude towards the new state of Israel.
The Roman Catholic Church in the 20th century entered into a period of renewal, responding to the challenge of increasing secularization of Western society and persecution resulting from great social unrest and revolutions in several countries. A major event in the period was the Second Vatican Council, which took place between 1962 and 1965. The church instituted reforms, especially in the 1970s after the conclusion of the Council, to modernize practices and positions. On taking office part way through the Council, Pope Paul VI referred to "an impatient struggle for renewal".
