Hugh of Saint-Victor's Commentary on Denys’ Celestial Hierarchies profoundly influenced the writers on mystical theology of the twelfth and following centuries. Richard is greatly indebted to him and makes use of his ideas and his examples. The following extract from the section on the Seraphim in Book VI of the Commentary (chapter VII in Denys) shows how Hugh transferred what Denys said of Angels to human love and contemplation. The insistence on love rather than knowledge as the means of union and contemplation far outstrips what Denys thought and is responsible for the whole, of the later trend of mystical theories. This passage is the source of many of Richard's illustrations in the Benjamin Major. Hugh's commentary on this section is longer than that on any other part of the work and he obviously lets himself go freely on the subject which was dearest to his heart.