 Part of astrology’s credibility was its pedigree, its long descent from sages of ancient Chaldaea and Egypt. The Oration and Conclusions authenticate this genealogy by reinforcing it with the even more venerable tradition of Kabbalah. Like Kabbalah, astrology was also made plausible by classicism, the new humanist culture that measured the authority of a doctrine by its age. Since astrology could claim a record of observing planets and stars over several millennia, it had stood the test of primordial time as its experience accumulated.