11. In a word, how is the earth said to be the middle, and of what is it the middle? For the universe is infinite; and infiniteness having neither beginning nor end, it is convenient also that it should not have any middle; for the middle is a certain end or limit, but infiniteness is a privation of all sorts of limits. Now he that affirms the earth to be the middle, not of the universe but of the world, is certainly a pleasant man, if he does not think that the world itself is subject to the same doubts and difficulties. For the universe has not left a middle even to the very world, but this being without any certain seat or foundation, it is carried in an infinite voidness to no proper end; or if perhaps it has stopped, it has met with some other cause or stay, not according to the nature of the place. As much may be conjectured of the moon, that by the means of another soul and another Nature, or (to say better) of another difference, the earth continues firm here below, and the moon moves. Besides this, see whether they are not ignorant of a great inconvenience and error. For if it is true that all which is without the centre of the earth, however it be, is above, there will then be no part of the world below; but the earth and all that is upon it will be above; and in brief, every body that shall be placed about the centre will be above, and there will be nothing below or underneath, but one only point which has no body, which will of necessity make head against and oppose all the rest of the world’s nature, if _above_ and _beneath_ are naturally opposite to one another. Nor is this the only absurdity that will follow; but all heavy and ponderous bodies will also lose the cause for which they move and tend downwards hither, for there will be no body below to which they should move; and as for that which is incorporeal, it is not probable, neither will they themselves allow, that it should be so forcible as to draw and retain all things about itself. But if it is unreasonable and contrary to Nature that the whole world should be above, and that there should be nothing below but an incorporeal and indivisible term or limit, then is this, as we say, yet more reasonable, that the region above and that below being divided the one from the other, have nevertheless each of them a large and spacious room.