Herbert Marcuse on Critical theory

“If the progressing rationality of advanced industrial society tends to liquidate, as an “irrational rest,” the disturbing elements of Time and Memory, it also tends to liquidate the disturbing rationality contained in this irrational rest. Recognition and relation to the past as present counteracts the functionalization of thought by and in the established reality. It militates against the closing of the universe of discourse and behavior; it renders possible the development of concepts which destabilize and transcend the closed universe by comprehending it as historical universe. Confronted with the given society as object of its reflection, critical thought becomes historical consciousness as such, it is essentially judgment. Far from necessitating an indifferent relativism, it searches in the real history of man for the criteria of truth and falsehood, progress and regression.”

“In high industrial civilization, ... the “inner” dimension of the mind in which opposition to the status quo can take root is whittled down. The loss of this dimension, in which the power of negative thinking—the critical power of Reason—is at home, is the ideological counterpart to the very material process in which advanced industrial society silences and reconciles the opposition. The impact of progress turns Reason into submission to the facts of life, and to the dynamic capability of producing more and bigger facts of the same sort of life. The efficiency of the system blunts the individuals' recognition that it contains no facts which do not communicate the repressive power of the whole. If the individuals find themselves in the things which shape their life, they do so, not by giving, but by accepting the law of things—not the law of physics but the law of their society.”