... exterior to the individual consciousness because they are not derived from the individuals taken in isolation but from their convergence and union (concours).... Doubtless, in the elaboration of the common result, each (individual) bears his due share; but the private sentiments do not become social except by combining under the action of the forces sui generis which association develops. As a result of these combinations, ... — Introduction to the Science of Sociology • Robert E. Park
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