p. 155-57 said:
In spite of its clear historical importance, the vast majority of people are unaware of the doctrinal contents and characteristics of Sol Invictus, perhaps because scholars normally avoid speaking about it or explaining how it succeeded in reaching such an elevated position. Above all, they avoid referring to it by another name, which is well known to the general public: Mithras. The reason for this reticence may lie in the widespread conviction that the worship of Mithras was for people of humble origins, slaves and freedmen, whereas Sol Invictus numbered among its followers emperors, senators, high-ranking bureaucrats, and military leaders. Yet there is no doubt that Sol Invictus and Mithras were one and the same. This is absolutely certain from countless inscriptions found in mithraea and on monuments dedicated to this divinity, where the name Mithras is always preceded by the appellation Sol Invictus or Deus Invictus.
Mithras and Sol Invictus are the same and inseparably linked to the same esoteric institution. The social differences found between its followers at the beginning of the second century and those in the early fourth century simply reflect the incredible rise of this institution in Roman society during the course of these two centuries. We should note, interestingly, that this rise is exactly parallel to the rise of Christianity, which, from its origins, was a religion of slaves and freedmen and, in the same two centuries, succeeded in counting among its followers emperors, senators, high-ranking bureaucrats, and military leaders. Further, in many cases that are historically proven (for example, in the case of Constantine), the followers of Sol Invictus were exactly the same as the followers of Christianity. It does not appear to be inappropriate, therefore, to try to understand the progress of Christianity by following that of the so-called cult of Mithras. We must, however, keep the facts as they have been gathered from historical and archaeological testimonies and must not be influenced by the interpretations and deliberate misinformation provided by the ancient and modern historians.
Most historians hypothesize -- or better, postulate -- that the cult of Mithras was imported into the Roman Empire from Persia, perhaps by soldiers who had served in the East. Yet this is only a hypothesis, somewhat vague and not backed up by any evidence. Among other aspects, it does not take into consideration the substantial difference in form and content that existed between the Oriental cult (actually of Mesopotamian, not Persian, origins) and the religion practiced in the Roman empire [...] It is important to underline that Sol Invictus Mithras was not a true religion, as the majority of historians continue to affirm, any more than modern Freemasonry is a religion dedicated to the worship of the Great Architect of the Universe.