13. About Ecphantus

A certain Ecphantus, a Syracusan, said that a true knowledge of the things that are could not be got. But he defines, as he thinks, that the first bodies are indivisible and that there are three differences between them, to wit, size, shape and power. And the number of them is limited and not boundless; but that these bodies are moved neither by weight nor by impact, but by a divine power which he calls Nous and Psyche. Now the pattern of this is the cosmos, wherefore it has become spherical in form by Divine power. And that the earth in the midst of the cosmos is moved round its own centre from west to east.