Benedict of Nursia

Benedict's main achievement, his Rule of Saint Benedict, contains a set of rules for his monks to follow. Heavily influenced by the writings of John Cassian, it shows strong affinity with the Rule of the Master, but it also has a unique spirit of balance, moderation and reasonableness (ἐπιείκεια, epieíkeia), which persuaded most Christian religious communities founded throughout the Middle Ages to adopt it. As a result, his Rule became one of the most influential religious rules in Western Christendom.