And the Lord’s day Plato prophetically speaks of in the tenth book of the Republic, in these words: “And when seven days have passed to each of them in the meadow, on the eighth they are to set out and arrive in four days.” By the meadow is to be understood the fixed sphere, as being a mild and genial spot, and the locality of the pious; and by the seven days each motion of the seven planets, and the whole practical art which speeds to the end of rest. But after the wandering orbs the journey leads to heaven, that is, to the eighth motion and day. And he says that souls are gone on the fourth day, pointing out the passage through the four elements. But the seventh day is recognised as sacred, not by the Hebrews only, but also by the Greeks; according to which the whole world of all animals and plants revolve. Hesiod says of it: