When the Ideal is understood as ontologically fundamental within the framework of an idealistic system, and the Real, on the other hand, as derived, then the first and foremost task of a philosophy of this kind is to prove the claimed fundamentally of the Ideal. This is immediately followed by the further demand to also substantiate on this basis the existence of the Real and particularly of natural being. These tasks have been understood and attempts made to solve them in very different ways in German Idealism - about which I cannot go into more detail here. Let me say this much: that Fichte and Schelling, it appears to me, already fail at the first task, ie. neither Fichte nor Schelling really succeeds in substantiating their pretended ideal as an absolute principle of philosophy. Fichte believes he has such a principle in the direct evidence of the self. However, as this is of little use for the foundation of a generally binding philosophy because of its ultimately private character, Fichte already replaces it with the principle of the absolute self already in his first Wissenschaftlehre of 1794. As a construction detached from the concrete self, this of course lacks that original direct certainty from which Fichte started in the first place, in other words: because the construction of an absolute self can no longer refer to direct evidence, it must be substantiated separately, something which Fichte, I believe, nonetheless fails to do. The same criticism can, in my view, be made of Schelling, who ingeniously substitutes constructions for arguments. His early intuition of an absolute identity which simultaneously underlies spirit and nature, remains just as thetic and unproven as that eternal subject on which he based the representation of his system in, for example, the Munich lectures of 1827.