Isidore of Seville

Isidore of Seville (c. 560 - Seville, 4 April 636) was a bishop of Seville for more than three decades and is widely regarded as the last great scholar of the ancient world in the West. Venerated as a saint by both the Catholic and Orthodox Churches, he is often called the last Father of the Western Church. He lived in the Visigothic kingdom at a time when classical culture was declining, aristocratic violence was common and literacy was rare, and his work proved decisive in carrying ancient learning into the Middle Ages.

He came from a Hispano-Roman Catholic family of standing. His father was called Severianus, and his siblings included Leander, bishop of Seville, Fulgentius, bishop of Astigi, and Florentina, a nun. Tradition places his birth in Cartagena, though some scholars think the family was already living in Seville by then. He was educated at the cathedral school of Seville, where he learned classical Latin, some Greek and Hebrew, and the liberal arts. After Leander's death in 600 or 601 he succeeded him in the see. From there he worked to move the Visigothic kings from Arianism to Catholicism, opposed heresy and pressed for discipline among the clergy and better training for future priests.

His relations with the kings were close. King Sisebut encouraged him to write works such as De natura rerum and his histories of the Goths, and King Sisenand turned to him to convene the Fourth Council of Toledo in 633, which Isidore led. The council required every bishop to found a seminary modelled on the one at Seville, and it promoted the study of Greek, Hebrew, the liberal arts, law and medicine. His most influential work is the Etymologiae, an encyclopedia in twenty books that preserved passages from countless ancient authors who would otherwise be lost. His friend Braulio of Zaragoza probably helped to circulate the text in its final form. The book became the most widely owned compendium in medieval libraries, and it kept much classical learning alive, although Isidore relied heavily on his sources and knew Greek only to a limited degree.

His influence lasted through the Middle Ages and the Renaissance, with numerous printed editions between 1470 and 1530. The Etymologiae provided a model for medieval encyclopedias, transmitted ideas from Aristotle and other Greek thinkers before translations from Arabic arrived, and left a mark on the bestiary tradition. He also served as a bridge between the ancient world and medieval Europe, and his work of gathering and organising knowledge secured him a lasting place in the history of Western culture.