Sophronius was the Patriarch of Jerusalem from 634 until his death, and is venerated as a saint in the Catholic Church and the Eastern Orthodox Church. Before rising to the primacy of the see of Jerusalem, he was a monk and theologian who...

Isaac of Nineveh also remembered as Isaac the Syrian and Isaac Cyrus was a Seventh century bishop and theologian best remembered for his written work. He is also regarded as a saint in the Eastern Orthodox Church, which the feast day of Jan...

Al-Ghazali known as Algazel to the western medieval world, born and died in Tus, in the Khorasan province of Persia (modern day Iran). He was a Muslim theologian, jurist, philosopher, and mystic of Persian origin and remains one of the most...

Peter Abelard (Latin: Petrus Abaelardus or Abailardus; French: Pierre Abélard) was a medieval French scholastic philosopher, theologian and preeminent logician. His love for, and affair with, Héloïse d'Argenteuil have become legendary. The...

Rumi was a 13th-century Persian poet, jurist, Islamic scholar, theologian, and Sufi mystic. Rumi's influence transcends national borders and ethnic divisions: Iranians, Tajiks, Turkish, Greeks, Pashtuns, other Central Asian Muslims, and the...

Saint Bonaventure was the eighth Minister General of the Order of Friars Minor, commonly called the Franciscans. He was a scholastic theologian and medieval philosopher, a contemporary of Thomas Aquinas, and a Cardinal Bishop of Albano. He...

Eckhart von Hochheim, commonly known as Meister Eckhart, was a German theologian, philosopher and mystic, born near Gotha, in the Landgraviate of Thuringia in the Holy Roman Empire. Eckhart came into prominence during the Avignon Papacy,...

Duns Scotus is generally considered to be one of the three most important philosopher-theologians of the High Middle Ages. Scotus has had considerable influence on both Catholic and secular thought. The doctrines for which he is best known...

William of Ockham was an English Franciscan friar and scholastic philosopher and theologian, who is believed to have been born in Ockham, a small village in Surrey.[1] He is considered to be one of the major figures of medieval thought and...

Geert Groote, otherwise Gerrit or Gerhard Groet, in Latin Gerardus Magnus, was a Dutch preacher and founder of the Brethren of the Common Life. In 1366 he visited the papal court at Avignon. About this time he was appointed to a canonry in...

Saint Catherine of Siena was a tertiary of the Dominican Order and a Scholastic philosopher and theologian. She also worked to bring the papacy of Gregory XI back to Rome from its displacement in France, and to establish peace among the Ita...

Desiderius Erasmus Roterodamus, known as Erasmus or Erasmus of Rotterdam, was a Dutch Renaissance humanist, Catholic priest, social critic, teacher, and theologian. Erasmus was a classical scholar and wrote in a pure Latin style. Among h...

Martin Luther was a German priest and professor of theology who initiated the Protestant Reformation. Strongly disputing the claim that freedom from God's punishment of sin could be purchased with money, he confronted indulgence salesman J...

Ulrich Zwingli was a leader of the Swiss Reformation. While Germany struggled under the political and religious consequences of Luther's reform movement, the movement itself quickly spilled out of the German borders into neighboring Switzer...

John Calvin was an influential French theologian and pastor during the Protestant Reformation. He was a principal figure in the development of the system of Christian theology later called Calvinism. Originally trained as a humanist lawyer,...