Towards monotheism / M. L. West -- Monotheism and pagan philosophy in later antiquity / Michael Frede -- Monotheism in the gnostic tradition / John Dillon -- Cult of Theos Hypsistos between pagans, Jews, and Christians / Stephen Mitchell -- Chaldean oracles : theology and theurgy / Polymnia Athanassiadi -- Significance of the speech of Praetextus / Wolf Liebeschuetz.