Source Library

Browse the sources Acutis draws from — magisterial documents, the Catechism, the Summa, and more.

Holy Bible
Douay-Rheims Translation
1899
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Catechism of the Catholic Church
Catholic Church
1992
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Magnifica Humanitas
Leo XIV
2026
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Summa Theologica
Thomas Aquinas
1274
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Laudato Si'
Francis
2015
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Evangelium Vitae
John Paul II
1995
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Humanae Vitae
Paul VI
1968
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Rerum Novarum
Leo XIII
1891
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Veritatis Splendor
John Paul II
1993
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Deus Caritas Est
Benedict XVI
2005
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Fratelli Tutti
Francis
2020
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Evangelii Gaudium
Francis
2013
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Fides et Ratio
John Paul II
1998
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Lumen Gentium
Paul VI
1964
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Gaudium et Spes
Paul VI
1965
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Dei Verbum
Paul VI
1965
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Sacrosanctum Concilium
Paul VI
1963
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The Confessions
Augustine of Hippo
401
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The City of God
Augustine of Hippo
426
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Familiaris Consortio
John Paul II
1981
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Amoris Laetitia
Francis
2016
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Spe Salvi
Benedict XVI
2007
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Caritas in Veritate
Benedict XVI
2009
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Centesimus Annus
John Paul II
1991
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Pacem in Terris
John XXIII
1963
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Redemptor Hominis
John Paul II
1979
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Dignitatis Humanae
Paul VI
1965
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Nostra Aetate
Paul VI
1965
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Populorum Progressio
Paul VI
1967
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Quadragesimo Anno
Pius XI
1931
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Mulieris Dignitatem
John Paul II
1988
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Lumen Fidei
Francis
2013
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Ecclesia de Eucharistia
John Paul II
2003
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Ut Unum Sint
John Paul II
1995
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Casti Connubii
Pius XI
1930
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Laborem Exercens
John Paul II
1981
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Dies Domini
John Paul II
1998
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Salvifici Doloris
John Paul II
1984
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Ad Gentes
Paul VI
1965
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Aeterni Patris
Leo XIII
1879
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Apostolicam Actuositatem
Paul VI
1965
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Christus Dominus
Paul VI
1965
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Compendium of the Catechism of the Catholic Church
Pope Benedict XVI
2005
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Council of Trent (Doctrinal Decrees and Canons)
Council of Trent
1563
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Gravissimum Educationis
Paul VI
1965
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Humanum Genus
Leo XIII
1884
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Inter Mirifica
Paul VI
1963
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Optatam Totius
Paul VI
1965
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Orientalium Ecclesiarum
Paul VI
1964
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Pascendi Dominici Gregis
Pius X
1907
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Pastor Aeternus (First Vatican Council)
Pius IX
1870
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Perfectae Caritatis
Paul VI
1965
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Presbyterorum Ordinis
Paul VI
1965
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Solicitudo Rei Socialis
John Paul II
1987
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Unitatis Redintegratio
Paul VI
1964
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A Concilio Constantinopolitano I
John Paul II
1981
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Aperuit Illis
Francis
2019
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Dilecti Amici
John Paul II
1985
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Dominicae Cenae
John Paul II
1980
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Misericordia Dei
John Paul II
2002
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Misericordia et Misera
Francis
2016
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Motu Proprio Summorum Pontificum
Benedict XVI
2007
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Octogesima Adveniens
Paul VI
1971
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Ordinatio Sacerdotalis
John Paul II
1994
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Porta Fidei
Benedict XVI
2011
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Rosarium Virginis Mariae
Pope John Paul II
2002
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Ad Resurgendum cum Christo (Instruction on the Burial of the Deceased and Cremation)
Congregation for the Doctrine of the Faith · approved by Pope Francis
2016
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Address on Addiction in Latin America
Leo XIV
2026
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Address on Drug Abuse and Illicit Trafficking
John Paul II
1987
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Address on Drugs and Addictions
Francis
2018
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Address on Narcotics to the Pontifical Academy of Sciences
Francis
2016
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Address to a Colloquium on Chemical Dependency
John Paul II
1997
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Antiqua et Nova
Dicastery for the Doctrine of the Faith · approved by Pope Francis
2025
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Ardens Felicitatis (Instruction on Prayers for Healing)
Congregation for the Doctrine of the Faith · approved by Pope John Paul II
2000
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Catechesis on Drug Abuse and Illicit Trafficking
Francis
2024
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Christian Faith and Demonology
Congregation for the Doctrine of the Faith
1975
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Compendium of the Social Doctrine of the Church
Pontifical Council for Justice and Peace
2004
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Considerations on the Primacy of the Successor of Peter in the Mystery of the Church
Congregation for the Doctrine of the Faith
1998
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Considerations Regarding Proposals to Give Legal Recognition to Unions Between Homosexual Persons
Congregation for the Doctrine of the Faith · approved by Pope John Paul II
2003
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Declaration on Euthanasia
Congregation for the Doctrine of the Faith · approved by Pope John Paul II
1980
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Declaration on Masonic Associations
Congregation for the Doctrine of the Faith · approved by Pope John Paul II
1983
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Declaration on Procured Abortion
Congregation for the Doctrine of the Faith · approved by Pope Paul VI
1974
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Dignitas Infinita
Dicastery for the Doctrine of the Faith · approved by Pope Francis
2024
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Dignitas Personae
Congregation for the Doctrine of the Faith · approved by Pope Benedict XVI
2008
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Doctrinal Note on Some Questions Regarding the Participation of Catholics in Political Life
Congregation for the Doctrine of the Faith · approved by Pope John Paul II
2002
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Dominus Iesus (Declaration on the Unicity and Salvific Universality of Jesus Christ and the Church)
Congregation for the Doctrine of the Faith · approved by Pope John Paul II
2000
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Donum Veritatis (Instruction on the Ecclesial Vocation of the Theologian)
Congregation for the Doctrine of the Faith · approved by Pope John Paul II
1990
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Donum Vitae (Respect for Human Life in Its Origin and the Dignity of Procreation)
Congregation for the Doctrine of the Faith · approved by Pope John Paul II
1987
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Fiducia Supplicans
Dicastery for the Doctrine of the Faith · approved by Pope Francis
2023
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Gestis Verbisque (Note on the Validity of the Sacraments)
Dicastery for the Doctrine of the Faith · approved by Pope Francis
2024
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Inter Insigniores (Declaration on the Admission of Women to the Ministerial Priesthood)
Congregation for the Doctrine of the Faith · approved by Pope Paul VI
1976
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Iuvenescit Ecclesia (Letter on the Relationship Between Hierarchical and Charismatic Gifts)
Congregation for the Doctrine of the Faith · approved by Pope Francis
2016
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Letter on Some Aspects of Christian Meditation
Congregation for the Doctrine of the Faith · approved by Pope John Paul II
1989
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Letter on the Collaboration of Men and Women in the Church and in the World
Congregation for the Doctrine of the Faith · approved by Pope John Paul II
2004
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Letter on the Pastoral Care of Homosexual Persons
Congregation for the Doctrine of the Faith · approved by Pope John Paul II
1986
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Letter on the Reception of Holy Communion by the Divorced and Remarried Members of the Faithful
Congregation for the Doctrine of the Faith · approved by Pope John Paul II
1994
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Letter to the Bishops on the New Revision of CCC 2267 on the Death Penalty
Congregation for the Doctrine of the Faith · approved by Pope Francis
2018
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Mater Populi Fidelis (Doctrinal Note on Some Marian Titles)
Dicastery for the Doctrine of the Faith · approved by Pope Leo XIV
2025
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Mysterium Ecclesiae (Declaration in Defense of the Catholic Doctrine on the Church)
Congregation for the Doctrine of the Faith · approved by Pope Paul VI
1973
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Note on "The Moral Norm of Humanae Vitae and Pastoral Duty"
Congregation for the Doctrine of the Faith
1989
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Note on the Morality of Using Some Anti-Covid-19 Vaccines
Congregation for the Doctrine of the Faith · approved by Pope Francis
2020
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Oeconomicae et pecuniariae quaestiones
Congregation for the Doctrine of the Faith · approved by Pope Francis
2018
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Persona Humana (Declaration on Certain Questions Concerning Sexual Ethics)
Congregation for the Doctrine of the Faith · approved by Pope Paul VI
1975
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Placuit Deo (Letter on Certain Aspects of Christian Salvation)
Congregation for the Doctrine of the Faith · approved by Pope Francis
2018
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Responses Concerning Sterilization in Catholic Hospitals (Quaecumque sterilizatio)
Congregation for the Doctrine of the Faith
1975
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Responsum ad dubium on the Blessing of Unions of Persons of the Same Sex
Congregation for the Doctrine of the Faith · approved by Pope Francis
2021
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Responsum ad dubium on the Teaching of Ordinatio Sacerdotalis
Congregation for the Doctrine of the Faith · approved by Pope John Paul II
1995
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Samaritanus Bonus
Congregation for the Doctrine of the Faith · approved by Pope Francis
2020
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Some Considerations Concerning the Response to Legislative Proposals on the Non-Discrimination of Homosexual Persons
Congregation for the Doctrine of the Faith
1992
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Una Caro: In Praise of Monogamy
Dicastery for the Doctrine of the Faith · approved by Pope Leo XIV
2025
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Vademecum for Confessors Concerning Some Aspects of the Morality of Conjugal Life
Pontifical Council for the Family
1997
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Epistle of Barnabas
Unknown (attributed to Barnabas)
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Epistle of Polycarp to the Philippians
Polycarp of Smyrna
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Epistle to Diognetus
Unknown
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Epistles of Ignatius
Ignatius of Antioch
107
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First Epistle of Clement to the Corinthians
Clement of Rome
96
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Martyrdom of Ignatius
Unknown
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Martyrdom of Polycarp
Church of Smyrna
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Second Epistle of Clement
Unknown (traditionally attributed to Clement of Rome)
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The Pastor of Hermas
Hermas
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The Stromata (Miscellanies), Books II–VIII
Clement of Alexandria
200
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Annual Report Promise To Protect
United States Conference of Catholic Bishops
2023
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Catholic Hymnody Evaluating Lyrics
United States Conference of Catholic Bishops
2020
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Charter Protection Children Young People
United States Conference of Catholic Bishops
2018
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Ethical And Religious Directives Health Care
United States Conference of Catholic Bishops
2025
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Forming Consciences For Faithful Citizenship
United States Conference of Catholic Bishops
2019
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Guidelines Publication Liturgical Books
United States Conference of Catholic Bishops
2012
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Liturgical Calendar for the Dioceses of the United States of America 2026
United States Conference of Catholic Bishops
2026
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Living As Missionary Disciples
United States Conference of Catholic Bishops
2017
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Moral Limits Technological Manipulation Body
United States Conference of Catholic Bishops
2023
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Mystery Of The Eucharist
United States Conference of Catholic Bishops
2022
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Open Wide Our Hearts
United States Conference of Catholic Bishops
2018
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Pastoral Role Diocesan Bishop Health Care
United States Conference of Catholic Bishops
2021
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Protecting Workers Dignity Of Work
United States Conference of Catholic Bishops
2016
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Stewards Of The Tradition
United States Conference of Catholic Bishops
2000
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Source Library

Holy Bible

Catechism of the Catholic Church

Magnifica Humanitas

Summa Theologica

Laudato Si'

Evangelium Vitae

Humanae Vitae

Rerum Novarum

Veritatis Splendor

Deus Caritas Est

Fratelli Tutti

Evangelii Gaudium

Fides et Ratio

Lumen Gentium

Gaudium et Spes

Dei Verbum

Sacrosanctum Concilium

The Confessions

The City of God

Familiaris Consortio

Amoris Laetitia

Spe Salvi

Caritas in Veritate

Centesimus Annus

Pacem in Terris

Redemptor Hominis

Dignitatis Humanae

Nostra Aetate

Populorum Progressio

Quadragesimo Anno

Mulieris Dignitatem

Lumen Fidei

Ecclesia de Eucharistia

Ut Unum Sint

Casti Connubii

Laborem Exercens

Dies Domini

Salvifici Doloris

Ad Gentes

Aeterni Patris

Apostolicam Actuositatem

Christus Dominus

Compendium of the Catechism of the Catholic Church

Council of Trent (Doctrinal Decrees and Canons)

Gravissimum Educationis

Humanum Genus

Inter Mirifica

Optatam Totius

Orientalium Ecclesiarum

Pascendi Dominici Gregis

Pastor Aeternus (First Vatican Council)

Perfectae Caritatis

Presbyterorum Ordinis

Solicitudo Rei Socialis

Unitatis Redintegratio

A Concilio Constantinopolitano I

Aperuit Illis

Dilecti Amici

Dominicae Cenae

Misericordia Dei

Misericordia et Misera

Motu Proprio Summorum Pontificum

Octogesima Adveniens

Ordinatio Sacerdotalis

Porta Fidei

Rosarium Virginis Mariae

Ad Resurgendum cum Christo (Instruction on the Burial of the Deceased and Cremation)

Address on Addiction in Latin America

Address on Drug Abuse and Illicit Trafficking

Address on Drugs and Addictions

Address on Narcotics to the Pontifical Academy of Sciences

Address to a Colloquium on Chemical Dependency

Antiqua et Nova

Ardens Felicitatis (Instruction on Prayers for Healing)

Catechesis on Drug Abuse and Illicit Trafficking

Christian Faith and Demonology

Compendium of the Social Doctrine of the Church

Considerations on the Primacy of the Successor of Peter in the Mystery of the Church

Considerations Regarding Proposals to Give Legal Recognition to Unions Between Homosexual Persons