Adjective
Fichtean (comparative more Fichtean, superlative most Fichtean)
Relating to Johann Gottlieb Fichte (1762–1814), German philosopher.
The problem with the Fichtean "thesis–antithesis–synthesis" model is that it implies that contradictions or negations come from outside of things. Source: Internet
In this sense, he adhered to the Fichtean principle of idealism: "The world is for a subject." Source: Internet