 His poem sets "Titanic" in a pessimistic post-Darwinian contrast between the achievements and arrogance of man and the humbling power of nature.The building of "Titanic" in its unprecedented scale is contrasted with the origins of its nemesis, following a familiar nineteenth-century notion of the double or "doppelgänger" (a theme most famously realised in "Strange Case of Dr. Jekyll and Mr. Hyde")