ENCYCLICALS AND OTHER WRITINGS OF
Faith and Religion (Qui pluribus)
9 Nov 1846. Pius, upon assuming the pontificate, writes to the
bishops concerning the errors of modern times concerning faith
and religion. He speaks at length concerning the clergy,
especially their education and duties.
the Immaculate Conception (Ubi
Promulgated 2 Feb
1849. Pius notes the requests from the Catholic world that the
doctrine of the Immaculate Conception be infallibly defined, and
that the conception of Mary receive further honor in the
liturgy. He accedes to the latter and asks the bishops for their
opinion on the former.
Immaculate Conception (Ineffabilis Deus)
Constitution issued by Pope Pius IX on December 8, 1854.
Priests and the Care of Souls (Amantissimi Redemptoris)
Promulgated 3 May
1858. Pius speaks of the benefits of the Mass, and the
obligation of offering and attending Mass He lays down a new
ruling on when Mass must be offered.
Promotion of False Doctrines (Quanto conficiamur moerore)
Promulgated 10 Aug
1863. Pius laments the attacks of unbelief, indifferentism and
liberalism on the Church, and calls for renewed prayers.
Current Errors (Quanta Cura)
Syllabus of Errors
Issued by Pope Pius IX in
1864 simultaneously with the Encyclical Quanta Cura.
Covers errors of Pantheism, Naturalism, Indifferentism,
Latitudinarianism, Socialism, Communism, also errors concerning
civil society, the Church, natural and Christian ethics,
Christian marriage, the Pope's civil power and modern