It must be also that the circle where the Garamanti are, as has been said above, upon this ball, can see the Sun revolve precisely above them, not after the fashion of a mill-stone, but of a wheel, which cannot in any part be seen except the centre, when it goes under Aries. And then it is seen to depart from its place immediately above and go towards Maria ninety-one days, or a little more, and by so many to return to its position; and then, when it has turned back, it goes before Libra, and even so departs and goes towards Lucia ninety-one days, or a little more, and in so many returns to its position. And this place always has the day equal with the night, either on this side or on that, as the Sun goes, and twice a year it has the summer of intense heat, and two little winters. It must also be that the two distances, which are midway from the two imaginary Cities and the mid-circle, see the Sun variously, according as they are remote from, and near to, these places. Now, by what has been said, this can be seen by him who has good understanding, to which it is well to give a little fatigue. He can now perceive that, by the Divine Providence, the World is so ordained that the sphere of the Sun, being revolved and turned round to one point, this ball whereon we are in every part receives an equal share of light and darkness. Oh, ineffable Wisdom, Thou which didst thus ordain! Oh, how poor and feeble is our mind when seeking to comprehend Thee! And you, O men, for whose benefit and pleasure I write, in what fearful blindness do you live if you never raise your eyes upwards to these things, but keep them fixed in the mud of your foolishness. CHAPTER VI.