Sentence:  The more strongly people felt about their ideas, the more potent the demons seemed to them: Christians believed that traditional paganism, far from being the work of men, was an 'opium of the masses', pumped into the human race by the non-human demons; and one scholar even ascribed bad <WSD>reviews</WSD> of his book to demonic inspiration! 
Meaning of the word marked with <WSD> tags:  An account intended as a critical evaluation of a text or a piece of work.