Everything made is made either by art or by a physical process or according to some power. Now in art or nature the maker must needs be prior to the made: but the maker, according to power, constitutes the made absolutely together with itself, since its power is inseparable from it; as the sun makes light, fire makes heat, snow makes cold.
Now if the Gods make the world by art, they do not make it be, they make it be such as it is. For all art makes the form of the object. What therefore makes it to be?

XIII. How things eternal are said to be made. - On the Gods and the Cosmos