English bishop and scholar who introduced into the world of European Christendom Latin translations of Greek and Arabic philosophical and scientific writings. His philosophical thinking—a somewhat eclectic blend of Aristotelian and Neoplatonic ideas—consistently searched for a rational scheme of things, both natural and divine.

Grosseteste was educated at the University of Oxford and then held a position with William de Vere, the bishop of Hereford. Grosseteste was chancellor of Oxford from about 1215 to 1221 and was given thereafter a number of ecclesiastical preferments and sinecures from which he resigned in 1232. From 1229 or 1230 to 1235 he was first lecturer in theology to the Franciscans, on whom his influence was profound. The works of this, his pre-episcopal career, include a commentary on Aristotle's (Aristotle) Posterior Analytics and Physics, many independent treatises on scientific subjects, and several scriptural commentaries.

Grosseteste became bishop of Lincoln in 1235 and held this office until his death. His career as a bishop (during which he translated, among other works, Aristotle's Nichomachean Ethics from the Greek) was remarkable for his ruthless pursuit of three abiding principles: a belief in the supreme importance of the cure of souls, a highly centralized and hierarchical conception of the church (church and state), and a conviction of the superiority of the church over the state. His challenge of the widespread practice of endowing officials in the service of the crown and papacy with ecclesiastical benefices intended for the cure of souls brought him into conflict with both. He attended the Council of Lyon (1245) and argued before the papal curia at Lyon (1250).