Neo-Platonism, which concerned itself to a large extent with demonology, leaned more and more towards theurgy, and was finally completely absorbed by it.
"The Oriental Religions in Roman Paganism"
Franz Cumont
Like a voice of love from heaven came their teaching, and Julian gave himself heart and soul to the mysterious fascination of their lying theurgy.
"The Arian Controversy"
H. M. Gwatkin
The turbid streams of theurgy and magic flowed into the broad river of Christian thought by two channels-the later Neoplatonism, and Jewish Cabbalism.
"Christian Mysticism"
William Ralph Inge