Peter Lombard's compilation of the 'Sentences' around 1150 became a foundational text for medieval scholasticism. This systematic collection of theological excerpts and commentaries provided a framework for theological education in medieval universities. Lombard's work influenced generations of theologians and scholars, shaping the development of Christian thought and the methodology of theological inquiry.

Provided the structural and theological vocabulary that medieval poets, including Dante and Chaucer, used to construct logically coherent moral and spiritual universes. Lombard's work influenced the allegorical and didactic elements in their poetry, shaping the moral landscape of medieval literature.