The absolute idea is the subject in its final form, thought. The otherness and negation is the object, being. The absolute idea now has to be interpr… - Herbert Marcuse

The operations of understanding thus divide the world into numberless polarities, and Hegel uses the expression ‘isolated reflection’ (isolierte Reflection) to characterize the manner in which understanding forms and connects its polar concepts. The rise and spread of this kind of thinking Hegel connects with the origin and prevalence of crucial relationships in human life. The antagonisms of ‘isolated reflections’ express real antagonisms. …. Isolation and opposition are not, however, the final state of affairs. The world must not remain a complex of fixed disparates. The unity that underlies the antagonisms must be grasped and realized by reason, which has the task of reconciling the opposites and ‘sublimating’ them in a true unity. P. 45

The notion contradicts reality when the latter has become self-contradictory. Hegel says that a prevailing social form can be successfully attacked by thought only if this form has come into open contradiction with its own ‘truth,’ in other words, if it can no longer fulfill the demands of its own contents. P. 51

German idealism rescued philosophy from the attack of British empiricism, and the struggle between the two became not merely a clash of different philosophical school, but a struggle for philosophy as such. P. 16