Which 6th-century rule became a cornerstone of Western monastic life?

The story behind the answer

Written by Benedict of Nursia around 530 at Monte Cassino, this rule balanced prayer (the Divine Office), manual labor, and study within a stable community led by an abbot. Its moderation—eschewing extreme asceticism—made it practical and adaptable, so monasteries across Western Europe adopted it, especially under Carolingian reformers, making it the template for Western monastic life.

By contrast, Basil’s rule guided Eastern monks, Augustine’s served communities of clergy, and Columbanus’s stricter Irish rule was gradually replaced on the continent. Benedictine houses became centers of agriculture, charity, and learning—copying manuscripts in their scriptoria and shaping medieval culture under the motto “ora et labora” (pray and work).