"Less elusive than Plato's was the supra-rationality of his distant disciple, the Egyptian Plotinus (died 270), creator of Neo-Platonism. With him the supra-rational represented an élan, a reaching beyond the clearly seen or clearly known, to the Spirit itself. He had a disciple Porphyry, like himself a sage—and yet a different sage [whose] supra-rationalities hungered for many things from which his rational nature turned askance. But he has a disciple, Iamblicus by name, whose rational nature... prostitutes itself in the service of unreason."