Yet the heat makes the light moveable, so that it springeth and driveth forth; as is seen in winter, when the light of the sun is likewise upon the earth, but the hot rays of the sun cannot reach into the earth, and that is the reason why no fruit grows in winter. Of the Qualification of the Cold Quality.

And you seek shade and shelter by reason of the heat of the sun, and the earth also burns with growing heat, and so you cannot tread on the earth, or ...