"Frankfurt School (a Critical Theory); Critical Evaluation of Its Theoretical (Philosophical) Principles

"Frankfurt" School with (the "critical" theory as its main basis) is part of an intellectual movement called "western Marxism", which developed under certain conditions in an attempt to provide new interpretations for Marx's theory about capitalist societies and criticize modern society and different epistemic systems such as positivism. Defining the "critical" theory and social and theoretical (epistemic) conditions of its formation and expouding its ontology, epistemology, anthropology and methodology, the present paper seeks to investigate and evaluate the theoretical (philosophical) principles of this theory by taking into consideration the first generation of its famous theorists (such as Horkheimer, Adorno, Marcuse, Fromm).