the teachings with which at first sight they seemed to conflict. Divine truth cannot be erroneous; whatever is a certain contradiction of a dogma certainly revealed cannot but be error and to repudiate error is surely an act of reason. 3. But, it may be asked, if the case should arise of an evident contradiction between faith and reason, must we abdicate the rights of reason? We who are believers do not admit the possibility of such a contradiction. To answer the unbeliever, we must make an appeal