Theology

If medieval philosophy had to be represented by a single name, that name would be Thomas Aquinas (1225–1274). Dominican friar, theologian, and philosopher, Aquinas undertook the most ambitious intellectual synthesis of the Middle Ages: harmonizing the philosophy of Aristotle — newly rediscovered in the Latin West through Arabic and Greek translations — with Christian theology. The result was two monumental Summae and dozens of commentaries, disputed questions, and opuscula that shaped Catholic theology, natural law theory, political ethics, and Western metaphysics for centuries. ...

Albertus Magnus (Albert the Great) Dominican friar, Bishop of Regensburg, and Doctor Universalis. He was the teacher of Thomas Aquinas and the principal figure responsible for the systematic introduction of Aristotle into the medieval Latin world. Unlike other scholastics, Albert had a genuine interest in the natural sciences — botany, zoology, mineralogy, alchemy — combining empirical observation with philosophical reflection. Canonized and declared Doctor of the Church in 1931, he is the patron saint of natural scientists. ...

Bonaventure Giovanni di Fidanza, known as Bonaventure of Bagnoregio. Franciscan theologian and philosopher; cardinal and Minister-General of the Franciscan Order. Contemporary and cordial adversary of Thomas Aquinas. Called the Doctor Seraphicus. Key Concepts Itinerary of the Mind to God (Itinerarium Mentis in Deum, 1259): the soul ascends to God in six steps — from the external world (vestiges of God in creation) to the interior (soul as image of God) to the superior (contemplation of God in itself); divine illumination is necessary at each stage Divine illumination: human knowledge requires a special light infused by God — inheritance from Augustine against the pure Aristotelianism of Thomas Aquinas Exemplarism: creatures are vestiges (vestigia), images (imagines) or similitudes (similitudines) of God — the world is a book that speaks of God Theology as affective wisdom: theology is not theoretical science but sapientia — knowledge that moves toward love; contemplation surpasses speculation Creation in time: against Aristotle and Averroes, the world is not eternal — it was created from nothing (ex nihilo) Influenced by Augustine — illuminism, interiority and love Plato (via Augustine) — exemplarism and participation Anselm of Canterbury — ontological argument and faith seeking understanding Francis of Assisi — Franciscan spirituality Influenced Later Franciscan school (Duns Scotus, Ockham — though divergent) Western Christian mysticism Thomas Aquinas — debate on the eternity of the world Works Commentary on the Sentences of Peter Lombard (1248–1255); Itinerary of the Mind to God (1259); Reduction of the Arts to Theology (1255); The Triple Way (c. 1259). ...

Friedrich Schleiermacher Friedrich Daniel Ernst Schleiermacher was born in Breslau (present-day Wrocław, Poland) on 21 November 1768 and died in Berlin on 12 February 1834. Son of a Reformed army chaplain, he studied at the Moravian seminary in Barby and subsequently at Halle. He became a preacher in Berlin, held a professorship in Halle (1804–1807), and from 1810 was professor of theology and philosophy at the newly founded University of Berlin — of which he was one of the principal intellectual architects, alongside Wilhelm von Humboldt and Fichte. ...

Maimonides Moses ben Maimon — known by the acronym Rambam and, in the Latin West, as Maimonides — was born in Córdoba, in Al-Andalus, around 1138, and is the greatest Jewish philosopher of the Middle Ages. Fleeing Almohad persecution, his family wandered through North Africa before settling in Egypt, where Maimonides became a court physician and the spiritual leader of the Jewish community of Cairo. He was at once a jurist, a Talmudist, a physician, and a philosopher, and died in 1204. ...

Martin Luther German Augustinian theologian; initiator of the Protestant Reformation. The 95 Theses (1517) against papal indulgences triggered a rupture that transformed Europe religiously, politically, and intellectually. Key Concepts Justification by faith alone (sola fide): man is not saved by works, merits, or sacraments — only by faith in Christ; against the soteriology of merit in the Catholic Church Sola Scriptura: the Bible is the sole religious authority; tradition and papal decrees have no equivalent authority. He translated the Bible into German — founding modern literary German Priesthood of all believers: all baptized Christians are priests — dissolves the clerical hierarchy as necessary mediation between God and the faithful Two kingdoms (Zwei-Reiche-Lehre): the spiritual kingdom (governed by the Gospel) and the temporal kingdom (governed by law and the sword) — clear separation that influenced political secularization Christian freedom (On the Freedom of a Christian, 1520): “A Christian is a perfectly free lord of all things and subject to no one. A Christian is a perfectly dutiful servant of all things and subject to everyone” — paradox of inner freedom with service to one’s neighbor Against free will (On the Bondage of the Will, 1525): against Erasmus — human will is enslaved by sin; only irresistible divine grace can liberate; predestination Influenced by Saint Augustine — grace, original sin, predestination Saint Paul — justification by faith (Romans, Galatians) William of Ockham — nominalism and critique of scholastic metaphysics Erasmus — textual humanism (but breaks with him) Influenced Calvin — reformed reformation and absolute predestination Kant — moral autonomy (secularization of Lutheran individual conscience) Kierkegaard — radical and individual faith against the institution Secularization and European political modernity Hegel — Reformation as a moment of Spirit in history Works 95 Theses (1517); On the Freedom of a Christian (1520); On the Babylonian Captivity of the Church (1520); On the Bondage of the Will (1525); Large and Small Catechisms (1529); Bible in German (NT: 1522; complete: 1534). ...

Saint Augustine Aurelius Augustine was born in 354 in Thagaste, in Roman North Africa, the son of a Christian mother (Monica) and a pagan father. A teacher of rhetoric in Carthage, Rome, and Milan, he traveled a long intellectual and spiritual road: he was kindled to philosophy by reading Cicero, adhered for years to Manichaeism, passed through skepticism, and found in the Neoplatonism of Plotinus the instrument that would lead him back toward Christianity. His conversion in Milan (386) — the famous “tolle, lege” (“take up and read”) scene narrated in the Confessions — was a turning point. He became bishop of Hippo and, until his death in 430, during the Vandal siege, was the greatest thinker of the Patristic age and one of the most influential figures in the whole history of the West. ...

Thomas Aquinas Born around 1225 in Roccasecca, near Aquino, in southern Italy, Thomas belonged to the high nobility, which firmly opposed his entry into the mendicant order of the Dominicans — even confining him for about a year. He studied under Albert the Great in Paris and Cologne and became a master of theology at the University of Paris. Despite the nickname “the dumb ox,” he proved to be the greatest genius of Scholasticism. After an intense experience in 1273, he ceased writing, saying that all he had produced seemed to him like “straw”; he died the following year, on his way to the Council of Lyon. Canonized in 1323, he is “the Angelic Doctor,” and Thomism remains the official reference of Catholic philosophy. ...

Xenophanes of Colophon Itinerant Greek poet-philosopher. Traveled throughout the Greek world for decades singing his philosophical verses. Considered a precursor to the Eleatic School (influenced Parmenides). Notable for his critique of anthropomorphic religion and proto-epistemological observations. Key Concepts Critique of religious anthropomorphism: Homer and Hesiod attributed human crimes to the gods (theft, adultery, betrayal); the Ethiopians make their gods black and flat-nosed, the Thracians make theirs blonde and blue-eyed — if oxen and horses could paint gods, they would make them bovine and equine Philosophical monotheism: there is a single God, the greatest among gods and men, who resembles mortals in nothing — neither in body nor in thought; immobile, he governs all things by his thought Epistemology of moderate skepticism: the gods did not reveal everything to men from the beginning; mortals discover the best progressively — but no man attains total truth about the gods and the cosmos; even if one spoke the truth, one could not be certain Geology and fossils: found marine fossils on mountains and concluded that earth and sea alternate; used empirical observations to speculate about cosmic changes Influenced by Milesian School — naturalism and critique of myth Greek poetic tradition — uses philosophical hexameters and elegies Influenced Parmenides — monism and concept of the One Ancient Skepticism (through epistemological humility) Plato — critique of the representation of gods in Homer (Republic) Works Fragments in verse (elegies, silloi, didactic poem On Nature) preserved through citations by other authors. ...