What metaphors are used in Naked Lunch by William S. Burroughs?

The Sailor is a drug addict who exists on a special plane of living all his own. He is also described as inhuman or lacking in essential humanity. His interactions are not limited to drug abuse. Instead, his actions are metaphors to drug use and give him a strange spiritual or demonic quality. In exchange for drugs he is often interested in things other than money, particularly time and mortality.