When reflection, feeling, or whatever other form the subjective consciousness may assume, regards the present as vanity, and thinks itself to be beyond it and wiser, it finds itself in emptiness, and, as it has actuality only in the present, it is vanity throughout. Against the doctrine that the idea is a mere idea, figment or opinion, philosophy preserves the more profound view that nothing is real except the idea.

Elements of the Philosophy of Right (1820)