DOGMA AND AXIOM. It appears important to distinguish between `dogma` and `axiom`. Axiom is a statement accepted as root of a theory, without deductive apriori proof. However, its validity is limited and RELATIVE to that theory and it is subject to inductive, a posteriori proof. Any rational theory has to be justified by conformity of its theorems (or axioms by inference) with expected deductive or experimental results. Experimental: axiom of Ether has been introduced IN ORDER to found a theory consistently coordinating and predicting the behavior of light. Its nature is TELEOLOGICAL, it is RELATIVE to its author`s objective. Its validity is RELATIVE and limited to the `Ether Model` and it is UNCERTAIN as subject to a posteriori experimental verification of deduced theorems. MM experiment contradicted one and, consequently, the axiom and the theory were scrapped. Deductive: Since the discovery of Russell`s Paradox most of research in the Set Theory dealt with elimination of Antinomies. Successive, carefully chosen axioms have been added and the free of Antinomies ZF version created. This result justifies a posteriori the axioms. To resume: Axiom is teleological and thus RELATIVE to author`s objective, Axiom is RELATIVE to theory, Axiom has to be PROVED a posteriori. Conclusion: AXIOM IS RELATIVE AND DEBATABLE. Dogma, on the contrary is ABSOLUTE AND FIXED. Discuss Mary`s Virginity, let alone call it in question, is blasphemous. Your opponent is not wrong, he is evil, you do not try to convince him, nor to argue; you fight him; fight with such arms as the current state of the involved Inquisition makes available: Demagogy, Stakes, Holy War, Genocide.