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He is against a simplistic reading of both the authors who are seen to have discovered the hidden " kernel " of meaning behind the apparently unconnected " forms " of commodities ( by Marx ) and dreams ( by Freud ) .
 Marx, Freud
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Marx, Freud