It is remarkable that Plato's account of mind at the end of the Laws goes beyond Anaxagoras, and beyond himself in any of his previous writings. Aristotle, in a well-known passage (Met.) which is an echo of the Phaedo, remarks on the inconsistency of Anaxagoras in introducing the agency of mind, and yet having recourse to other and inferior, probably material causes. But Plato makes the further criticism, that the error of Anaxagoras consisted, not in denying the universal agency of mind, but in denying the priority, or, as we should say, the eternity of it. Yet in the Timaeus he had himself allowed that God made the world out of pre-existing materials: in the Statesman he says that there were seeds of evil in the world arising out of the remains of a former chaos which could not be got rid of; and even in the Tenth Book of the Laws he has admitted that there are two souls, a good and evil. In the Meno, the Phaedrus, and the Phaedo, he had spoken of the recovery of ideas from a former state of existence. But now he has attained to a clearer point of view: he has discarded these fancies. From meditating on the priority of the human soul to the body, he has learnt the nature of soul absolutely. The power of the best, of which he gave an intimation in the Phaedo and in the Republic, now, as in the Philebus, takes the form of an intelligence or person. He no longer, like Anaxagoras, supposes mind to be introduced at a certain time into the world and to give order to a pre-existing chaos, but to be prior to the chaos, everlasting and evermoving, and the source of order and intelligence in all things. This appears to be the last form of Plato's religious philosophy, which might almost be summed up in the words of Kant, 'the starry heaven above and the moral law within.' Or rather, perhaps, 'the starry heaven above and mind prior to the world.'