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Then , a week before the book 's publication , Hitchens wrote : " ... it is obvious much of what I say [ in The Rage Against God ] arises out of my attempt to debate religion with him [ Christopher Hitchens ] , it would be absurd to pretend that much of what I say here is not intended to counter or undermine arguments he presented in his book , God Is Not Great ... " .
 Hitchens, Christopher Hitchens
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Hitchens, Christopher Hitchens