Theon answered that it was Sophocles.[314] ‘And physicians must be allowed to do so,’ I said, ‘we cannot help it. But philosophers must not be listened to, if they choose to meet paradoxes with paradoxes, and, when contending against strange views, to invent views which are more strange and wonderful still. [Sidenote: 924] Here are these Stoics with their “tendency towards the middle”! Is there any paradox which is not implicit there? That our earth, with all those depths and heights and inequalities, is a Sphere? That there are people at our antipodes who live like timber-worms or lizards, their lower limbs turned upper-most as they plant them on earth? That we ourselves do not keep perpendicular as we move, but remain on the slant, swerving like drunkards? That masses of a thousand talents’ weight, borne through the depth of the earth, stop when they reach the middle point, though nothing meets or resists them; or, if mere momentum carry them down beyond the middle point, they wheel round and turn back of themselves? That [Sidenote: B] segments of beams[315] sawn off at the surface of the earth on either side, do not move downwards all the way, but as they fall upon the surface receive equal thrusts from the outside inwards and are jammed around the middle? That water rushing violently downwards, if it should reach this middle point—an incorporeal point as they say—would stand balanced around it for a pivot, swinging with an oscillation which never stops and never can be stopped? Some of these a man could not force himself [Sidenote: C] to present to his intellect as possible, even if untrue! This is to make _Up down, down up, where Topsy-Turvy reigns_,[316] all from us to the centre down, and all below the centre becoming up in its turn! So that if a man, by the “sympathy” of earth, were to stand with the central point of his own body touching the centre, he would have his head up and his feet up too! And if he were to dig into the space beyond, the down part of his body would bend upwards, and the soil would be dug out from above to below; and if another man could be conceived meeting him, the feet of both would be said to be up, and would really become so!