Yet something might be said for the opposite view that this earlier age combined magic with its science and philosophy as much, if not more, than the later time. We know that Greek philosophy had its beginnings in mythology; and if the representatives of its maturity accepted the Greek religion with its auspices drawn from sacrifices, its oracles and the like, we may with reason ask, is it probable that they would hesitate to give similar doctrines a place in their scientific and philosophical systems? Pliny, for his part, evidently regarded himself as less credulous and as less inclined to magic than the ancient Greeks, although it is true that he attributed their belief to Oriental influence. He declared that Pythagoras, Empedocles, Democritus and Plato had learned the magic art abroad and had taught it on their return.[114] Beside the name of Hippocrates in the field of medicine he set that of Democritus in the domain of magic.[115] Elsewhere he said that Pythagoras and Democritus, having embraced the doctrine of the magi, first expounded the properties of magic plants in the Western world.[116] In Cicero’s _De Divinatione_, Epicurus is alone of the Greek philosophers declared free from trust in divination, and Panætius is said to have been the only Stoic to reject astrology.[117] Fortunately we are not here concerned to measure either relatively or absolutely with any attempt at exactness the amount of magic in the learning of the closing centuries of Greek national life, but only to investigate whether in the philosophy of the Greeks there were not theories at least liable to encourage a later age to belief in magic. There was, for instance, the view of the Stoics that the universe is a single living whole—a theory well fitted to form the starting-point for a belief in sympathetic magic. Also their doctrine that events are all arranged in a fatal causal series was favorable to divination. Quintus Cicero, represented as upholding the truth of that art, cites the Stoics as authority, and we may safely assume that Seneca drew his view of divination largely from the same source.