Hegel is (unknowingly) an admirable 'theoretician' of ideology insofar as he is a 'theoretician' of Universal Recognition who unfortunately ends up in the ideology of Absolute Knowledge. Feuerbach is an astonishing 'theoretician' of the mirror connexion, who unfortunately ends up in the ideology of the Human Essence. To find the material with which to construct a theory of the guarantee, we must turn to Spinoza.