Twelve theological tracts explained in depth — from God's existence and the Trinity through the sacraments to eschatology — by the great seminary manuals.
Catholic theology is the systematic study of what God has revealed. This site presents the great seminary manuals — works written specifically to teach theology clearly, precisely, and in the language of the Church's tradition.
God's knowability, existence demonstrated by reason, essence and attributes.
Read tractThe divine processions, relations, and persons.
Read tractGod as Creator, angels, man, original justice and original sin.
Read tractThe Incarnation, the hypostatic union, the two natures of Christ.
Read tractThe Redemption, Christ's passion, satisfaction and merit.
Read tractDivine motherhood, perpetual virginity, Immaculate Conception, Assumption.
Read tractActual and habitual grace, justification, merit.
Read tractThe seven sacraments in general and in particular.
Read tractConscience, law, sin, the virtues and vices, the Commandments.
Read tractThe Church, papal primacy and infallibility, development of doctrine.
Read tractDeath, particular judgement, heaven, hell, purgatory, the resurrection.
Read tractThe purgative, illuminative, and unitive ways; prayer; perfection.
Read tract"Theology is taught by God, teaches of God, and leads to God."— St Thomas Aquinas, Summa Theologica I, Prologue