It began with the Divinity of Christ, still earlier perhaps with some of the gnostic cosmogonical or theophanic theories, so onward to the Trinity; it expired, or at least drew near its end, as the religion of the Roman East, discussing the Divine light on Mount Tabor.
"The Religious Life of London"
J. Ewing Ritchie
He was not a Philosopher; his speculations belonged to those cosmogonical dreams which precede true philosophy, and begin again when philosophy goes to sleep, as we see in the speculations of the present day.
"Plutarch's Lives, Volume II"
Aubrey Stewart & George Long
All this was mixed up with most complicated cosmogonical myths.
"Life of St. Francis of Assisi"
Paul Sabatier