Rabanus Maurus entered the Benedictine abbey of Fulda in the Frankish heartland as a child oblate and was sent as a young monk to study under Alcuin of York at Tours, absorbing the program of classical and Christian learning Alcuin had built there under Charlemagne's patronage, before returning to Fulda to teach. He became abbot of Fulda in 822 and spent the following two decades expanding its library and school until it stood among the foremost centers of learning anywhere in the Carolingian world, training a generation of Frankish clergy in grammar, scripture and the liberal arts.
His own writing during and after this period was vast, including commentaries on most books of the Bible, treatises on education and clerical training, and De Rerum Naturis, an encyclopedic survey of the natural world, human institutions and scripture organized to show how each subject pointed toward Christian truth, a format that made it a standard reference work copied and used across medieval European monasteries for centuries afterward.
He resigned as abbot in 842 during a period of political upheaval but returned to public life five years later when he was named archbishop of Mainz in 847, a post he held until his death in 856. Later medieval and modern scholars alike have regarded him as the central figure of the Carolingian intellectual revival's second generation, the student who took Alcuin's program and gave it lasting institutional form at Fulda.