5 Plato is proved to be more religious than these men, for he allowed that the same God was both just and good, having power over all things, and Himself executing judgment, expressing himself thus, “And God indeed, as He is also the ancient Word, possessing the beginning, the end, and the mean of all existing things, does everything rightly, moving round about them according to their nature; but retributive justice always follows Him against those who depart from the divine law.” Then, again, he points out that the Maker and Framer of the universe is good. “And to the good,” he says, “no envy ever springs up with regard to anything;” thus establishing the goodness of God, as the beginning and the cause of the creation of the world, but not ignorance, nor an erring Æon, nor the consequence of a defect, nor the Mother weeping and lamenting, nor another God or Father.
Source: Adversus haereses (New Advent)