First published in English as part of the Essays in the Theory of Society, this volume reissues the stand-alone Homo Sociologicus for which the author wrote a new introduction when it was originally published in 1973. The controversial book deals with the history, significance and limits of the category of social role and discusses the dilemma posed by homo sociologicus. The author shows that for society and sociology, socialization invariably means depersonalization, the yielding up of man’s absolute individuality and liberty to the constraint and generality of social roles. This volume includes the essay, Sociology and Human Nature, written as a postscript to Homo Sociologicus.