Dialectical thought understands the critical tension between “is” and “ought” first as an ontological condition, pertaining to the structure of Being… - Herbert Marcuse

They [great works of literature] are invalidated not because of their literary obsolescence. Some of these images pertain to contemporary literature and survive in its most advanced creations. What has been invalidated is their subversive force, their destructive content—their truth. In this transformation, they find their home in everyday living. The alien and alienating oeuvres of intellectual culture become familiar goods and services. Is their massive reproduction and consumption only a change in quantity, namely, growing appreciation and understanding, democratization of culture? The truth of literature and art has always been granted (if it was granted at all) as one of a “higher” order, which should not and indeed did not disturb the order of business. What has changed in the contemporary period is the difference between the two orders and their truths. The absorbent power of society depletes the artistic dimension by assimilating its antagonistic contents. In the realm of culture, the new totalitarianism manifests itself precisely in a harmonizing pluralism, where the most contradictory works and truths peacefully coexist in indifference. Prior to the advent of this cultural reconciliation, literature and art were essentially alienation, sustaining and protecting the contradiction—the unhappy consciousness of the divided world, the defeated possibilities, the hopes unfulfilled, and the promises betrayed. They were a rational, cognitive force, revealing a dimension of man and nature which was repressed and repelled in reality.

Understanding finds nothing but itself when it seeks the essence behind the appearance of things. ‘It is manifest that behind the so-called curtain, which is to hide the inner world, there is nothing to be seen unless we ourselves go behind there, as much in order that we may thereby see, as that there may be something behind there which can be seen.’ P. 111

The social and political theory responsible for the development of Fascist Germany was, then, related to Hegelianism in a completely negative way. P. 418