The thinkers
Saints, Doctors, philosophers and rulers
Everyone the test can match you with, East and West, with those outside the Church included so you can see when your leanings run closer to Kant or Marx than to any saint.
252 shown
Antiquity
Aristotle
384–322 BC · Aristotelianism
Pre-Christian
Greek pre-Christian
Confucius (Kong Fuzi)
551–479 BC · Confucianism
Pre-Christian
Confucian
Laozi (Lao Tzu)
6th century BC (traditional) · Taoism
Pre-Christian
Taoist
Lucius Annaeus Seneca
c. 4 BC–AD 65 · Roman Stoicism
Pre-Christian
Roman pre-Christian
Lucretius
c. 99–c. 55 BC · Epicurean atomism
Pre-Christian
Roman pre-Christian (Epicurean)
Marcus Tullius Cicero
106–43 BC · Roman eclecticism (Academic and Stoic)
Pre-Christian
Roman pre-Christian
Mencius (Mengzi)
c. 372–289 BC · Confucianism; the idealist wing
Pre-Christian
Confucian
Mozi (Mo Di)
c. 470–391 BC · Mohism; founder
Pre-Christian
Mohist
Patanjali
fl. c. 200 BC–400 AD · Classical Yoga (one of the six orthodox schools), on the dualist metaphysics of Samkhya
Outside the Church
Hindu (Samkhya-Yoga; classical yoga)
Philo of Alexandria
c. 20 BC–c. 50 AD · Hellenistic Judaism; allegorical exegesis; Middle Platonism
Pre-Christian
Jewish (Hellenistic; Middle Platonist)
Plato
c. 428–348 BC · Platonism
Pre-Christian
Greek pre-Christian
Plotinus
c. 204–270 · Neoplatonism
Pre-Christian
Greek pre-Christian
Siddhartha Gautama (the Buddha)
c. 480–400 BC · Buddhism (the Middle Way)
Outside the Church
Buddhist
Xunzi
c. 310–235 BC · Confucianism; the realist wing
Pre-Christian
Confucian
Zhuangzi (Chuang Tzu)
c. 369–286 BC · Taoism (philosophical; the Inner Chapters)
Pre-Christian
Taoist
Patristic
Constantine the Great
c. 272–337 · Christian empire
Saint
Byzantine
Dionysius the Areopagite
fl. c. 500 · Christian Neoplatonism (apophatic theology)
Eastern Father
Byzantine
Justinian I
c. 482–565 · Byzantine symphony of Church and empire
Saint
Byzantine
Nagarjuna
c. 150–250 · Madhyamaka (Middle Way school); founder
Outside the Church
Buddhist (Madhyamaka)
Origen of Alexandria
c. 185–254 · Alexandrian theology
Catholic · censured
Alexandrian
Pope St. Gregory the Great
c. 540–604 · Latin monastic and pastoral theology
Doctor of the Church
Latin
Pope St. Leo the Great
c. 400–461 · Roman theology of the papacy and the Incarnation
Doctor of the Church
Latin
Severus of Antioch
c. 465–538 · Cyrilline (miaphysite) Christology
Orthodox
Oriental Orthodox (Syriac miaphysite)
St. Ambrose of Milan
c. 339–397 · Latin Nicene theology
Doctor of the Church
Latin
St. Athanasius of Alexandria
c. 296–373 · Nicene theology
Doctor of the Church
Alexandrian
St. Augustine of Hippo
354–430 · Augustinianism
Doctor of the Church
Latin
St. Basil the Great
c. 330–379 · Cappadocian theology
Doctor of the Church
Byzantine
St. Cyril of Alexandria
c. 376–444 · Alexandrian Christology
Doctor of the Church
Alexandrian
St. Ephrem the Syrian
c. 306–373 · Syriac theology
Doctor of the Church
Syriac
St. Gregory Nazianzen
329–390 · Cappadocian theology
Doctor of the Church
Byzantine
St. Gregory of Nyssa
c. 335–c. 395 · Cappadocian theology
Saint
Byzantine
St. Irenaeus of Lyons
c. 130–202 · Early Catholic tradition
Doctor of the Church
Byzantine
St. Isaac the Syrian
d. c. 700 · East Syriac mysticism
Eastern Father
Syriac
St. Jerome
c. 347–420 · Latin biblical scholarship
Doctor of the Church
Latin
St. John Chrysostom
c. 347–407 · Antiochene exegesis
Doctor of the Church
Antiochene
St. John Damascene
c. 675–749 · Byzantine synthesis
Doctor of the Church
Byzantine
St. Justin Martyr
c. 100–165 · Greek Apologists
Saint
Byzantine
St. Macrina the Younger
c. 327–379 · Cappadocian ascetic philosophy
Saint
Byzantine
St. Maximus the Confessor
c. 580–662 · Byzantine theology (Chalcedonian synthesis)
Saint
Byzantine
St. Severinus Boethius
c. 480–524 · Christian Neoplatonism and Latin Aristotelianism
Saint
Latin
St. Syncletica of Alexandria (Amma Syncletica)
fl. 4th century · Desert monasticism
Saint
Alexandrian
St. Vincent of Lérins
d. c. 445 · Gallic monastic theology
Saint
Latin
Tertullian
c. 155–c. 220 · Latin theology (North African)
Catholic · censured
Latin
Medieval
Adi Shankara
c. 788–820 · Advaita Vedanta (non-dualism)
Outside the Church
Hindu (Advaita Vedanta)
Al-Ghazali
1058–1111 · Ash'ari theology; Sufism
Outside the Church
Muslim (Ash'ari theology; Sufism)
Al-Hallaj
c. 858–922 · Early Baghdad Sufism of ecstatic love; a school of one
Outside the Church
Muslim (Sufi; executed as a heretic)
Averroes (Ibn Rushd)
1126–1198 · Aristotelianism (Averroism)
Outside the Church
Muslim (Maliki jurist; Aristotelian)
Avicenna (Ibn Sina)
980–1037 · Islamic Neoplatonic Aristotelianism (falsafa)
Outside the Church
Muslim (Persian Aristotelian)
Bl. John Duns Scotus
c. 1266–1308 · Scotism
Blessed
Latin
Bl. Ramon Llull
c. 1232–1316 · Lullism (Ars Magna)
Blessed
Latin
Charlemagne
c. 747–814 · Carolingian Christendom
Blessed
Latin
Dante Alighieri
1265–1321 · Poetic Thomism
Catholic
Latin
Dogen
1200–1253 · Soto Zen; founder in Japan
Outside the Church
Buddhist (Zen, Soto)
Ibn Arabi
1165–1240 · Unity of being (wahdat al-wujud); the metaphysics of the divine names
Outside the Church
Muslim (Sunni; Akbarian Sufism)
Ibn Taymiyya
1263–1328 · Hanbali law and creed; scripturalist theology against kalam, falsafa and monist Sufism
Outside the Church
Muslim (Hanbali; Salafi forerunner)
Jalal al-Din Rumi
1207–1273 · Persian Sufism of love; the Mevlevi (whirling) order founded by his son
Outside the Church
Muslim (Sunni Hanafi; Sufi, Mevlevi)
Joachim of Fiore
c. 1135–1202 · Apocalyptic exegesis
Catholic · censured
Latin
Madhvacharya
1238–1317 · Dvaita (dualist) Vedanta; Madhva sampradaya of Udupi
Outside the Church
Hindu (Dvaita Vedanta; Vaishnava)
Meister Eckhart
c. 1260–1328 · Rhineland mysticism (Dominican)
Catholic · censured
Latin
Moses Maimonides
1138–1204 · Jewish Aristotelianism
Outside the Church
Jewish (Rabbinic)
Nicholas of Cusa
1401–1464 · Christian Neoplatonism
Catholic
Latin
Peter Abelard
1079–1142 · Early scholasticism (dialectic)
Catholic · censured
Latin
Peter Lombard
c. 1096–1160 · Early scholasticism
Catholic
Latin
Ramanuja
1017–1137 (traditional) · Vishishtadvaita (qualified non-dualism); bhakti
Outside the Church
Hindu (Vishishtadvaita, Sri Vaishnava)
Shinran
1173–1263 · Jodo Shinshu (True Pure Land); founder
Outside the Church
Buddhist (Pure Land, Jodo Shinshu)
St. Albert the Great
c. 1200–1280 · Dominican Aristotelianism
Doctor of the Church
Latin
St. Anselm of Canterbury
1033–1109 · Early scholasticism (Augustinian)
Doctor of the Church
Latin
St. Bernard of Clairvaux
1090–1153 · Cistercian monastic theology
Doctor of the Church
Latin
St. Bonaventure
1221–1274 · Franciscan Augustinianism
Doctor of the Church
Latin
St. Bridget of Sweden
1303–1373 · Prophetic visionary; Bridgettine
Saint
Latin
St. Catherine of Siena
1347–1380 · Dominican lay mysticism
Doctor of the Church
Latin
St. Clare of Assisi
1194–1253 · Franciscan; the Poor Ladies of San Damiano
Saint
Latin
St. Gertrude the Great
1256–c. 1302 · Helfta; Benedictine liturgical mysticism
Saint
Latin
St. Gregory of Narek
c. 951–1003 · Armenian monastic mysticism
Doctor of the Church
Armenian
St. Gregory Palamas
1296–1359 · Palamism (hesychast theology)
Orthodox
Byzantine
St. Hildegard of Bingen
1098–1179 · Benedictine visionary theology
Doctor of the Church
Latin
St. Louis IX of France
1214–1270 · Christian kingship
Saint
Latin
St. Nerses Shnorhali
1102–1173 · Armenian theology of the Cilician age
Saint
Armenian
St. Olga of Kiev
c. 890–969 · First Christian of Rus'
Saint
Byzantine
Sts. Cyril and Methodius
c. 826–869 and c. 815–885 · Byzantine mission to the Slavs
Saint
Byzantine
St. Stephen of Hungary
c. 975–1038 · Christian kingship
Saint
Latin
St. Symeon the New Theologian
949–1022 · Byzantine mystical theology
Eastern Father
Byzantine
St. Theodore the Studite
759–826 · Byzantine monastic theology
Saint
Byzantine
St. Thomas Aquinas
1225–1274 · Thomism
Doctor of the Church
Latin
St. Vladimir of Kiev
c. 958–1015 · Baptism of Rus'
Saint
Byzantine
William of Ockham
c. 1287–1347 · Nominalism (via moderna)
Catholic · censured
Latin
Zhu Xi (Chu Hsi)
1130–1200 · Neo-Confucianism; School of Principle (Cheng–Zhu)
Outside the Church
Confucian (Neo-Confucian)
Early modern
Adam Smith
1723–1790 · Scottish Enlightenment; political economy
Protestant
Protestant (Church of Scotland); Stoic-tinged deism
Baruch Spinoza
1632–1677 · Rationalist pantheism
Outside the Church
Jewish (excommunicated); secular rationalism
Blaise Pascal
1623–1662 · Augustinian apologetics (Port-Royal)
Catholic · censured
Latin
Cajetan (Tommaso de Vio)
1469–1534 · Thomism (commentatorial)
Catholic
Latin
Cornelius Jansen
1585–1638 · Jansenism
Condemned
Latin
David Hume
1711–1776 · Empiricist skepticism
Outside the Church
Secular (skeptic)
Desiderius Erasmus of Rotterdam
c. 1466–1536 · Christian humanism
Catholic · censured
Latin
Domingo Báñez
1528–1604 · Thomism (Bañezian)
Catholic
Latin
Francisco de Vitoria
c. 1483–1546 · School of Salamanca (Thomism)
Catholic
Latin
Francisco Suárez
1548–1617 · Suárezianism (Jesuit scholasticism)
Catholic
Latin
François Fénelon
1651–1715 · Pure love (semi-quietism)
Catholic · censured
Latin
Jacques-Bénigne Bossuet
1627–1704 · Gallican orthodoxy
Catholic · censured
Latin
Jean-Jacques Rousseau
1712–1778 · Romantic naturalism and the general will
Protestant
Protestant (Genevan Calvinist); natural religion
John Calvin
1509–1564 · Reformed (Calvinist) theology
Protestant
Protestant
John Locke
1632–1704 · Empiricism and liberalism
Anglican
Anglican (latitudinarian)
John of St. Thomas (João Poinsot), OP
1589–1644 · Thomism (commentatorial)
Catholic
Latin
John Wesley
1703–1791 · Methodism (Arminian evangelicalism)
Protestant
Protestant
Jonathan Edwards
1703–1758 · New England Calvinism; Reformed idealism
Protestant
Protestant (Reformed, Congregationalist)
Luis de Molina
1535–1600 · Molinism
Catholic
Latin
Martin Luther
1483–1546 · Lutheran Reformation
Protestant
Protestant
Menno Simons
1496–1561 · Peaceful Anabaptism; Mennonite theology
Protestant
Protestant (Anabaptist, Mennonite)
Miguel de Molinos
1628–1696 · Quietism
Condemned
Latin
Mulla Sadra
c. 1571–1640 · Hikmat muta'aliya (Transcendent Philosophy): Avicenna, Suhrawardi and Ibn Arabi united
Outside the Church
Muslim (Twelver Shi'i; Transcendent Philosophy)
René Descartes
1596–1650 · Cartesian rationalism
Catholic · censured
Latin
Richard Hooker
1554–1600 · Anglican via media; Thomist natural law
Anglican
Anglican (Elizabethan Settlement)
St. Alphonsus Liguori
1696–1787 · Alphonsian moral theology (equiprobabilism)
Doctor of the Church
Latin
St. Catherine of Genoa
1447–1510 · Genoese lay mysticism of pure love
Saint
Latin
St. Francis de Sales
1567–1622 · Salesian spirituality (devout humanism)
Doctor of the Church
Latin
St. Ignatius of Loyola
1491–1556 · Ignatian spirituality
Saint
Latin
St. Jane Frances de Chantal
1572–1641 · Salesian
Saint
Latin
St. John of the Cross
1542–1591 · Carmelite mysticism
Doctor of the Church
Latin
St. Josaphat Kuntsevych
c. 1580–1623 · Union of Brest (Ukrainian Greek Catholic)
Saint
Byzantine
St. Robert Bellarmine
1542–1621 · Jesuit controversial theology (congruism)
Doctor of the Church
Latin
St. Teresa of Ávila
1515–1582 · Carmelite mysticism
Doctor of the Church
Latin
St. Thomas More
1478–1535 · Christian humanism
Saint
Latin
Thomas Hobbes
1588–1679 · Materialism and social contract
Anglican
Anglican (Erastian)
Ven. Matteo Ricci, SJ
1552–1610 · Jesuit accommodation (China mission)
Venerable
Latin
Wang Yangming
1472–1529 · Neo-Confucianism; School of Mind (Lu–Wang)
Outside the Church
Confucian (Neo-Confucian)
Modern
Abraham Kuyper
1837–1920 · Neo-Calvinism; Reformed public theology
Protestant
Protestant (Reformed, Neo-Calvinist)
Arthur Schopenhauer
1788–1860 · Transcendental idealism of the Will; philosophical pessimism
Outside the Church
Secular (atheist pessimist); Lutheran upbringing, drawn to Vedanta, Buddhism and Christian asceticism
Auguste Comte
1798–1857 · Positivism; sociology; Religion of Humanity
Outside the Church
Secular (positivist); founder of the Religion of Humanity, Catholic upbringing
Bl. Antonio Rosmini-Serbati
1797–1855 · Rosminian ontology; Catholic liberal reform
Blessed
Latin
Bl. Frédéric Ozanam
1813–1853 · Social Catholicism; Christian democracy
Blessed
Latin
Bl. Josaphata Hordashevska
1869–1919 · Ukrainian Greek Catholic active religious life
Blessed
Ukrainian Greek Catholic
Bl. Karl of Austria
1887–1922 · Christian monarchy; Catholic social policy
Blessed
Latin
Charles Darwin
1809–1882 · Evolution by natural selection
Outside the Church
Secular (agnostic)
Charles Spurgeon
1834–1892 · Reformed Baptist; Puritan evangelicalism
Protestant
Protestant (Baptist, Calvinistic)
Edmund Burke
1729–1797 · Conservatism; prescription and natural law
Anglican
Anglican
Edward Bouverie Pusey
1800–1882 · Oxford Movement; patristic Anglo-Catholicism
Anglican
Anglican (Anglo-Catholic, Tractarian)
Félicité de Lamennais
1782–1854 · Liberal Catholicism; traditionalism (common consent)
Catholic · censured
Latin
Friedrich Nietzsche
1844–1900 · Perspectivism; will to power
Outside the Church
Secular (atheist); Lutheran pastor's son
Friedrich Schleiermacher
1768–1834 · Liberal Protestantism; Romantic theology; hermeneutics
Protestant
Protestant (Reformed; liberal)
Fyodor Dostoevsky
1821–1881 · Orthodox Christian personalism (in fiction)
Orthodox
Orthodox (Russian)
Gabriel García Moreno
1821–1875 · Catholic confessional state
Catholic
Latin
G. K. Chesterton
1874–1936 · Common-sense Thomism; Distributism
Catholic
Latin
G. W. F. Hegel
1770–1831 · Absolute idealism
Protestant
Protestant (Lutheran)
Hilaire Belloc
1870–1953 · Distributism; Catholic historiography
Catholic
Latin
Immanuel Kant
1724–1804 · Transcendental idealism
Outside the Church
Protestant (Lutheran-Pietist)
John Stuart Mill
1806–1873 · Utilitarian liberalism
Outside the Church
Secular (agnostic)
Joseph de Maistre
1753–1821 · Counter-revolutionary traditionalism
Catholic
Latin
Juan Donoso Cortés
1809–1853 · Counter-revolutionary political theology
Catholic
Latin
Karl Marx
1818–1883 · Historical materialism
Outside the Church
Secular (atheist); Jewish descent, baptized Lutheran as a child
Ludwig Feuerbach
1804–1872 · Anthropological materialism; projection theory of religion
Outside the Church
Secular (atheist humanist); Lutheran upbringing, Young Hegelian
Mar Ivanios
1882–1953 · Malankara reunion; Antiochene monasticism
Servant of God
Syro-Malankara
Muhammad Abduh
1849–1905 · Islamic modernism (Salafiyya); rationalist Sunni theology; reform of al-Azhar
Outside the Church
Muslim (Sunni; Egyptian modernist; Salafiyya reformer)
Napoleon Bonaparte
1769–1821 · Enlightened despotism
Catholic
Catholic (nominal); Gallican statecraft
Pope Leo XIII
1810–1903 · Thomist revival; Catholic social doctrine
Catholic
Latin
Pope Pius XI
1857–1939 · Social kingship of Christ; social doctrine; Catholic Action
Catholic
Latin
Pope Pius XII
1876–1958 · Thomist Magisterium; Mystici Corporis; Mediator Dei
Venerable
Latin
Pope St. Pius X
1835–1914 · Anti-Modernism; Eucharistic and liturgical renewal
Saint
Latin
Sigmund Freud
1856–1939 · Psychoanalysis
Outside the Church
Secular (atheist); Jewish
Søren Kierkegaard
1813–1855 · Christian existentialism
Protestant
Protestant (Lutheran)
St. Charbel Makhlouf
1828–1898 · Maronite monastic hermit tradition
Saint
Maronite
St. Elizabeth Ann Seton
1774–1821 · American Vincentian; Catholic schooling
Saint
Latin
St. John Henry Newman
1801–1890 · Development of doctrine; Oratorian
Saint
Latin
St. Kuriakose Elias Chavara
1805–1871 · Syro-Malabar renewal; Carmelite spirituality
Saint
Syro-Malabar
St. Rafqa
1832–1914 · Maronite redemptive suffering
Saint
Maronite
St. Thérèse of Lisieux
1873–1897 · Carmelite; the Little Way
Doctor of the Church
Latin
Swami Vivekananda
1863–1902 · Neo-Vedanta: practical Advaita, the harmony of religions, service as worship
Outside the Church
Hindu (Advaita Vedanta; Ramakrishna Order)
Thomas Jefferson
1743–1826 · Enlightenment republicanism
Outside the Church
Deist / Unitarian
Ven. Andrey Sheptytsky
1865–1944 · Eastern Catholic renewal; Kyivan tradition
Venerable
Ukrainian Greek Catholic
Vincenzo Gioberti
1801–1852 · Ontologism; neo-Guelph nationalism
Catholic · censured
Latin
Vladimir Soloviev
1853–1900 · Russian religious philosophy; Sophiology; Godmanhood
Catholic
Byzantine
William James
1842–1910 · Pragmatism; psychology of religion
Outside the Church
Secular; Protestant milieu (Swedenborgian father)
William J. Seymour
1870–1922 · Azusa Street Pentecostalism; Wesleyan Holiness
Protestant
Protestant (Pentecostal, Holiness)
Contemporary
Abraham Joshua Heschel
1907–1972 · Depth theology; prophetic Judaism
Outside the Church
Jewish (Hasidic-rooted; Conservative)
Alasdair MacIntyre
1929–2025 · Thomist Aristotelianism; tradition-constituted rationality
Catholic
Latin
Albert Camus
1913–1960 · Absurdism; the philosophy of revolt and measure
Outside the Church
Secular (absurdist humanist); nominal Catholic upbringing in Algiers
Alcide De Gasperi
1881–1954 · Christian Democracy
Servant of God
Latin
Alexander Schmemann
1921–1983 · Liturgical theology
Orthodox
Orthodox (Russian; Orthodox Church in America)
Archbishop Marcel Lefebvre
1905–1991 · Traditionalist Catholicism (SSPX)
Catholic · censured
Latin
Ayn Rand
1905–1982 · Objectivism
Outside the Church
Secular (atheist); Jewish descent
Bernard Lonergan, SJ
1904–1984 · Transcendental Thomism (critical realism)
Catholic
Latin
Bertrand Russell
1872–1970 · Logical atomism; analytic empiricism
Outside the Church
Secular (agnostic); aristocratic Whig upbringing
Charles De Koninck
1906–1965 · Laval Thomism; primacy of the common good
Catholic
Latin
C. S. Lewis
1898–1963 · Christian apologetics; Christian Platonism
Anglican
Anglican
Dietrich Bonhoeffer
1906–1945 · Confessing Church; Lutheran theology of discipleship
Protestant
Protestant (Lutheran)
Dietrich von Hildebrand
1889–1977 · Phenomenological realism; value ethics
Catholic
Latin
Dorothy Day
1897–1980 · Catholic Worker personalism; distributism; pacifism
Servant of God
Latin
Dumitru Stăniloae
1903–1993 · Neo-patristic dogmatics; Philokalic theology
Orthodox
Orthodox (Romanian)
Emmanuel Levinas
1906–1995 · Phenomenology; ethics as first philosophy
Outside the Church
Jewish (Lithuanian, Mitnagdic; phenomenology)
Étienne Gilson
1884–1978 · Existential Thomism; history of medieval philosophy
Catholic
Latin
Franz Rosenzweig
1886–1929 · The New Thinking; philosophy of dialogue
Outside the Church
Jewish (German; the New Thinking)
G. E. M. Anscombe
1919–2001 · Analytic Thomism; virtue ethics
Catholic
Latin
Gustavo Gutiérrez, OP
1928–2024 · Liberation theology
Catholic
Latin
Hannah Arendt
1906–1975 · Political theory; the vita activa
Outside the Church
Secular; Jewish
Hans Küng
1928–2021 · Liberal Catholic theology (Tübingen)
Catholic · censured
Latin
Hans Urs von Balthasar
1905–1988 · Theological aesthetics; ressourcement
Catholic
Latin
Henri de Lubac, SJ
1896–1991 · Nouvelle théologie; ressourcement
Catholic
Latin
Jacques Maritain
1882–1973 · Thomist personalism; Integral Humanism
Catholic
Latin
Jean Daniélou, SJ
1905–1974 · Ressourcement patristics; theology of history
Catholic
Latin
Jean-Paul Sartre
1905–1980 · Atheistic existentialism
Outside the Church
Secular (atheist)
John Howard Yoder
1927–1997 · Anabaptist social ethics; Christian pacifism
Protestant
Protestant (Mennonite)
John Rawls
1921–2002 · Political liberalism
Outside the Church
Secular; lapsed Episcopalian
John Zizioulas
1931–2023 · Eucharistic ecclesiology; trinitarian personalism
Orthodox
Orthodox (Greek; Ecumenical Patriarchate)
Josef Pieper
1904–1997 · Thomist philosophy of culture
Catholic
Latin
Joseph B. Soloveitchik
1903–1993 · Brisker Talmudism; Neo-Kantian philosophy of halakhah
Outside the Church
Jewish (Modern Orthodox; Brisker)
Josyf Slipyj
1892–1984 · Eastern Catholic confessor; Thomist-trained theologian
Catholic
Ukrainian Greek Catholic
J. R. R. Tolkien
1892–1973 · Catholic mythopoeia; sub-creation
Catholic
Latin
Karl Barth
1886–1968 · Dialectical theology (neo-orthodoxy)
Protestant
Protestant
Karl Rahner, SJ
1904–1984 · Transcendental Thomism
Catholic
Latin
Leo Strauss
1899–1973 · Classical political philosophy; Athens and Jerusalem
Outside the Church
Secular; Jewish
Louis Bouyer
1913–2004 · Ressourcement; liturgical and spiritual theology
Catholic
Latin
Louis Massignon
1883–1962 · Catholic Islamology; mystical substitution (Badaliya)
Catholic
Melkite
Ludwig Wittgenstein
1889–1951 · Analytic philosophy; philosophy of language
Outside the Church
Secular; baptized Catholic, Jewish descent
Marie-Dominique Chenu, OP
1895–1990 · Historical Thomism; ressourcement (Le Saulchoir)
Catholic
Latin
Martin Buber
1878–1965 · Philosophy of dialogue; Hasidism
Outside the Church
Jewish (Hasidic-rooted philosophy of dialogue)
Martin Heidegger
1889–1976 · Phenomenology; the question of Being
Outside the Church
Secular; lapsed Catholic
Michel Foucault
1926–1984 · Genealogy; analysis of power and knowledge
Outside the Church
Secular (post-structuralist); Catholic upbringing in Poitiers
Mohandas K. Gandhi
1869–1948 · Satyagraha (non-violent resistance)
Outside the Church
Hindu (Vaishnava), with Jain and Christian influences
Muhammad Iqbal
1877–1938 · Islamic modernism; philosophy of the self (khudi); reconstruction of theology through modern science
Outside the Church
Muslim (Sunni; modernist; poet-philosopher of Pakistan)
Patriarch Maximos IV Sayegh
1878–1967 · Eastern Catholic ecclesiology at Vatican II
Catholic
Melkite
Paul Tillich
1886–1965 · Existential and ontological theology; theology of culture
Protestant
Protestant (Lutheran; existentialist)
Peter Singer
b. 1946 · Utilitarian bioethics
Outside the Church
Secular (atheist)
Pierre Teilhard de Chardin, SJ
1881–1955 · Evolutionary cosmic Christology
Catholic · censured
Latin
Pope Benedict XVI (Joseph Ratzinger)
1927–2022 · Augustinian-Bonaventurian ressourcement; hermeneutic of continuity
Catholic
Latin
Pope Francis
1936–2025 · Jesuit pastoral theology; theology of the people
Catholic
Latin
Réginald Garrigou-Lagrange, OP
1877–1964 · Strict (Bañezian) Thomism
Catholic
Latin
Richard Dawkins
b. 1941 · Scientific naturalism (New Atheism)
Outside the Church
Secular (atheist)
Robert F. Taft, SJ
1932–2018 · Comparative liturgiology (Byzantine)
Catholic
Byzantine
Romano Guardini
1885–1968 · Liturgical movement; Catholic Weltanschauung
Catholic
Latin
Sayyid Qutb
1906–1966 · Revolutionary Islamism: God's sole sovereignty (hakimiyya) against modern jahiliyya
Outside the Church
Muslim (Sunni; Muslim Brotherhood; Islamist)
Seraphim Rose
1934–1982 · Traditionalist Orthodoxy; patristic literalism
Orthodox
Orthodox (Russian Church Outside Russia; American convert)
Sergius Bulgakov
1871–1944 · Sophiology; Russian religious philosophy
Orthodox
Orthodox (Russian, in Paris)
Servais Pinckaers, OP
1925–2008 · Thomist virtue ethics; renewal of moral theology
Catholic
Latin
Silouan the Athonite
1866–1938 · Athonite hesychasm; the way of humility and love of enemies
Orthodox
Orthodox (Russian, Athonite)
Simone Weil
1909–1943 · Christian Platonism; mysticism of attention
Outside the Church
Catholic-adjacent; Jewish descent, unbaptised
Sri Aurobindo
1872–1950 · Integral Yoga; the Supermind and the evolution of consciousness
Outside the Church
Hindu (Integral Yoga; evolutionary Vedanta)
St. Alphonsa of the Immaculate Conception
1910–1946 · Franciscan Clarist; Syro-Malabar
Saint
Syro-Malabar
St. Charles de Foucauld
1858–1916 · Nazareth spirituality; universal brotherhood
Saint
Latin
St. Faustina Kowalska
1905–1938 · Divine Mercy
Saint
Latin
St. Gianna Beretta Molla
1922–1962 · Italian Catholic Action; lay holiness
Saint
Latin
St. John Paul II (Karol Wojtyła)
1920–2005 · Thomist personalism; Theology of the Body
Saint
Latin
St. Josephine Bakhita
c. 1869–1947 · Canossian
Saint
Latin
St. Teresa Benedicta of the Cross (Edith Stein)
1891–1942 · Phenomenology and Thomism; Carmelite
Saint
Latin
St. Teresa of Calcutta
1910–1997 · Missionaries of Charity
Saint
Latin
Tenzin Gyatso, the 14th Dalai Lama
b. 1935 · Gelug (Tsongkhapa's Madhyamaka); secular ethics
Outside the Church
Buddhist (Tibetan, Gelug)
Thomas Merton
1915–1968 · Cistercian contemplative; interreligious dialogue
Catholic
Latin
Thomas Nagel
b. 1937 · Analytic philosophy; anti-reductionist naturalism
Outside the Church
Secular (atheist); Jewish descent, no religious upbringing
T. S. Eliot
1888–1965 · Anglo-Catholic modernism in poetry; Christian cultural criticism
Anglican
Anglican (Anglo-Catholic)
Ven. Fulton J. Sheen
1895–1979 · Thomist apologetics; broadcast evangelization
Venerable
Latin
Ven. Robert Schuman
1886–1963 · Christian Democracy; European reconciliation
Venerable
Latin
Vladimir Lenin
1870–1924 · Marxism-Leninism
Outside the Church
Secular (Marxist-Leninist atheism)
Vladimir Lossky
1903–1958 · Neo-patristic (Palamite) theology
Orthodox
Orthodox (Russian, in Paris)
Yves Congar, OP
1904–1995 · Ressourcement ecclesiology; ecumenism
Catholic
Latin