A treatise on Christian Hermeticism, "Meditations on the Tarot: A Journey into Christian Hermeticism", describes the biblical account of Cain and Abel as a myth, in that it expresses, in a form narrated for a particular case, an "eternal" idea. It shows us how brothers can become mortal enemies through the very fact that they worship the same God in the same way. According to the author, the source of religious wars is revealed. It is not the difference in dogma or ritual which is the cause, but the "pretention to equality" or "the negation of hierarchy."