Is there then, Favorinus, any first or principal power or existence of cold, as fire is the principle of heat, by the presence and imparting of which all other things of the same nature become cold? Or rather is not cold the privation of heat, as they say darkness is the privation of light, and rest the privation of motion? In regard that cold seems to be firm and stable, and heat always in motion; and for that the refrigeration of hot things is not caused by the presence of any active power, but by the departure of the heat. For we find the heat go off in great quantity, and then that which remains grows cold. Thus the vapor which boiling water sends forth ceases also when the heat is gone. Therefore refrigeration, expelling the heat, diminishes the quantity, while nothing supplies the place of it.

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load focus Greek (Harold Cherniss and William C. Helmbold, 1957)
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