In truth, if he, still harking back to Egyptian ideas and customs, had been content with surrounding his family, especially its women, with a respect which would have protected them against the infamous accusations and iniquitous persecutions to which many had fallen victims, he might have had credit for an action which was good, just, and useful to the state. That strange condition of affairs which had been growing up under Tiberius was both absurd and dangerous to the country: the emperor was honored with extraordinary powers and made the object of a semi-religious veneration; but his family, and especially its women, were, as a sort of retribution, set outside the laws and fiercely assailed in a thousand insidious ways. But the lunatic Caligula was not the man to keep even a wise proposal within reasonable limits. Power, popularity, and praise quickly aroused all that was warped and excessive in his nature, and very soon, as he showed at the end of the year 37, he entertained an idea which must have seemed to the Romans a horrible impiety. His wife died soon after he became emperor. Another marriage seemed obligatory, and he decided that he would marry his sister Drusilla. Historians have represented this intention as the perverse delirium of an unbridled sensuality. It was certainly the gross act of a madman, but there was perhaps more politics in his madness than perversity; for it was an attempt to introduce into Rome the dynastic marriages between brothers and sisters which had been the constant tradition of the Ptolemies and the Pharaohs of Egypt. This oriental custom certainly seems a horrible aberration to us, who have been educated according to the strict and austere doctrines of Christianity, which, inheriting in these matters the fine flower of Greco-Latin ideas, has purified and rendered them more rigorous. But for centuries in Egypt,--that is, in the most ancient of the Mediterranean civilizations,--this horrible aberration was looked upon as a sovereign privilege which brought the royal dynasty into relationship with the gods. By means of it, this family preserved the semi-divine purity of its blood; and perchance this custom, which had survived up to the fall of the Ptolemies, was only the projection of ideas and customs which in most ancient times had had a much wider diffusion along the Mediterranean world, for traces of it can be found even in Greek mythology. For were not Jupiter and Juno, who constituted the august Olympian couple, at the same time also brother and sister? Gradually restricted through the spreading of Greek civilization, this custom was finally eradicated at the shores of the Mediterranean by Rome after the destruction of the kingdom of the Ptolemies.