“The store of wisdom does not consist of hard coins which keep their shape as they pass from hand to hand; it consists of ideas and doctrines whose meanings change with the minds that entertain them.” MindDoeIdeasHardHandsKnowledgeShapesStoresDoctrineCoinsSharing Knowledge Book:Man and Society: A Critical Examination of Some Important Social and Political Theories from Machiavelli to Marx... John Plamenatz.... Source: Man and Society: A Critical Examination of Some Important Social and Political Theories from Machiavelli to Marx... John Plamenatz....