His Liber formularum spiritalis intelligentiae addressed to his son Veranius is a defence of the lawfulness of reading an allegorical sense in Scripture, bringing to bear the metaphors in Psalms and such phrases as "the hand of God" The term anagoge (ἀναγωγὴ) is employed for the application of Scripture to the heavenly Jerusalem to come, and there are other examples of what would become classic Medieval hermeneutics.