摘要:Our intent in here is to expose the speculative philosophy limits having the Feuerbachian critical analysis in Principles of Philosophy of the Future as reference. In this work, Feuerbach presents us to the speculative philosophy fundamentals so that we can understand it as a true rational theology. Such Feuerbachian statement is based on the latent submission from the speculative philosophers to suggested themes on the theological reflection, themes which appeared in a period that goes from the mosaic philosophy until the primordial Christianity, precisely on the Neoplatonic philosophy. We analyze in this work the German philosopher’s argument to unmask the inversion done by the speculative philosophy, precisely on the Neoplatonic inheritance assumed in the modern times by the Hegel’s philosophy.