Abstract
Nietzsche diagnosed a tendency for self-destruction within the Enlightenment movement. According to him, in giving up the idea of God, the idea of non-perspective truth, that is the faith in reason, falls victim to it. Wittgenstein und Jaspers reflected upon the characteristics of this faith in reason, which starts where scientific knowledge ends, respectively, where it becomes aware of its hypothetical status. Plato reserved the term of knowing for this relation of a presuppositionless conceptually inexplicable megiston mathema. In Jaspers′s concept of a philosophical faith not based on revelation, both elements of the platonic knowing of the good itself can be found: the greatness of the matter, transcending everything being the case, and the intensity of being really touched. Yet with regard to philosophical radicalness, the explanatory function of the absolute knowing for each kind of truth seems to exceed the faith of Jaspers