Dialogues of Plato - MobileReference [467]
Now the earth has divers wonderful regions, and is indeed in nature and extent very unlike the notions of geographers, as I believe on the authority of one who shall be nameless.
What do you mean, Socrates? said Simmias. I have myself heard many descriptions of the earth, but I do not know, and I should very much like to know, in which of these you put faith.
And I, Simmias, replied Socrates, if I had the art of Glaucus would tell you; although I know not that the art of Glaucus could prove the truth of my tale, which I myself should never be able to prove, and even if I could, I fear, Simmias, that my life would come to an end before the argument was completed. I may describe to you, however, the form and regions of the earth according to my conception of them.
That, said Simmias, will be enough.
Well, then, he said, my conviction is, that the earth is a round body in the centre of the heavens, and therefore has no need of air or any similar force to be a support, but is kept there and hindered from falling or inclining any way by the equability of the surrounding heaven and by her own equipoise. For that which, being in equipoise, is in the centre of that which is equably diffused, will not incline any way in any degree, but will always remain in the same state and not deviate. And this is my first notion.
Which is surely a correct one, said Simmias.
Also I believe that the earth is very vast, and that we who dwell in the region extending from the river Phasis to the Pillars of Heracles inhabit a small portion only about the sea, like ants or frogs about a marsh, and that there are other inhabitants of many other like places; for everywhere on the face of the earth there are hollows of various forms and sizes, into which the water and the mist and the lower air collect. But the true earth is pure and situated in the pure heaven--there are the stars also; and it is the heaven which is commonly spoken of by us as the ether, and of which our own earth is the sediment gathering in the hollows beneath. But we who live in these hollows are deceived into the notion that we are dwelling above on the surface of the earth; which is just as if a creature who was at the bottom of the sea were to fancy that he was on the surface of the water, and that the sea was the heaven through which he saw the sun and the other stars, he having never come to the surface by reason of his feebleness and sluggishness, and having never lifted up his head and seen, nor ever heard from one who had seen, how much purer and fairer the world above is than his own. And such is exactly our case: for we are dwelling in a hollow of the earth, and fancy that we are on the surface; and the air we call the heaven, in which we imagine that the stars move. But the fact is, that owing to our feebleness and sluggishness