In a treatise which professed to explain the opinions of the ancient philosophers concerning the nature of the gods, we might expect to discover the theological Trinity of Plato. But Cicero very honestly confessed that, though he had translated the Timaeus, he could never understand that mysterious dialogue. See Hieronym. praef. ad 1. xii. in Isaiam, tom. v. p. 154 [tom. iv. p. 494, ed. Vallars.].