It cannot be stated with certainty that the process of enlightenment (Aufklärung) is irreversible. In many systems the tendency to dogmatize the ideologies by means of which political systems define their identity, invariably dominates the emancipatory tendencies of the intelligentsia. In recent years it has become clear that one has to add to this the fact that in the context of the international student youth movement, part of the intelligentsia is unmistakably fascinated by what dogmatism has been able to achieve as far as integration and orientation are concerned; and thus actively ideological and political movements have been developed which are contrary to the process of enlightening clarification. It is obvious that philosophy plays an important part here.The present essay on the other hand stresses by way of compensation the traditional enlightening function of philosophy. The term "enlightening clarification" is understood here to mean that process in which the stock of assumptions in regard to reality about which one does not allow for discussion, and which thus, correspondingly, in its claim of validity, is morally and politically controlled and protected group-specifically, is reduced to a minimum. The process of clarification, thus, is a process by means of which our socially secured interestedness, namely that reality is in this way and not in any other way, gradually disintegrates. The institutional character of "universally accepted" truths as well as the hermeneutic and rhetorical technologies of man's enlightening clarification, whose function it is to dissolve this universal acceptance, are described in this essay in great detail.