What are the motifs in The Underground Man by Mick Jackson?

Self and Soul-searching is a recurring idea. During the final months of his life, the Duke embarks on a journey to discover who he is. He employs two strategies in particular: (1) he takes little excursions on his estate and collects items that were formerly possessed by his ancestors; and (2) he attempts to recover as much as possible a memory that haunts him. The latter is discussed above under the theme Memory. Thus the remainder of this section will be devoted to discussion of the former.