 Here Bolzano’s non-cognitivist (i.e., emotive and directive) interpretation of religious language is especially clear. This conception goes back to the key experience in his religious development, whereby he was able to overcome his religious doubts, and which essentially influenced his decision to become a priest: From Marian Mika, his professor in pastoral theology, he came to the conviction that a religious doctrine is justified, independently of its truth content, only insofar as the belief in it is morally advantageous.