"Adam’s surviving son, Cain, is the ultimate literary symbol of that wandering exclusion, the first real nomad"

As noted in the bookmark to page 18, the exile of Cain – the murderer from whom all men are descended – is the cause of man’s restless search to regain paradise, internally or in a physical place, and perhaps the cause of the plethora of unfulfilled longings that make man uniquely man. To leave the sought-after South Pole is imaginatively figured like an expulsion. Milton describes leaving Paradise in Paradise Lost:

The World was all before them, where to chose
Their place of rest, and Providence their guide:
They hand in hand with wand’ring steps and slow,
Through Eden took their solitary way.