Plutarch De primo frigido 22

[22] We must, therefore, believe that the reason why ancient learned men held that there is no commerce between earthly and celestial things was not that they distinguished up and down by relative position, as we do in the case of scales; but rather it was the difference in powers that led them to assign such things as are hot and bright, swift and buoyant, to the eternal and imperishable part of nature, while darkness and cold and slowness they considered the unhappy heritage of transitory and submerged beings. Then too, the body of a living creature, as long as it; breathes and flourishes, does, as the poets say, enjoy both warmth and life ¹ ; but when these forsake it and it is abandoned in the realm of earth alone, immediately frigidity and congelation seize upon it, since warmth naturally resides in anything else rather than in the earthy.