By parity of reasoning a blood ritual may have been adopted by peoples who practise the expulsion of evils, conceiving them either animistically or as powers; catharsis, in the sense of removal of uncleanness, is not necessarily primitive. [Please select]
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There are certainly times when catharsis is necessary but "one thing is certain, the day for routine purgation is past." [Please select]
Do you have a better example in your mind? Please submit your sentence!