MacDonald argues that damnation is a state of mind, not an external action. In other words, damned souls have
chosen to be damned by turning their backs on God. For the remainder of the novel, MacDonald will show how sinners deny themselves true happiness by choosing to pursue money, power, and other illusory pleasures (i.e., “to reign in Hell”). Lewis condenses his arguments about Heaven and Hell with a quote from John Milton, whose long poem
Paradise Lost was an important influence on Lewis (and the history of Christian thought in general).