motion, it in turn sets in motion those things which are generated from it. And these were at first in irrational and irregular motion, but after they began to frame the universe, under the conditions possible they were made by God symmetrical and regular. For the two causes existed even before the world was made, as well as becoming in the third place, but they were not distinct, merely traces of them being found, and in disorder. When the world was made, they too acquired order.* And out of all the bodies there are the universe was fashioned. He holds God, like the soul, to be incorporeal. For only thus is he exempt from change and decay. As already stated, he assumes the Ideas to be causes and principles whereby the world of natural objects is what it is. On good and evil he would discourse to this effect. He maintained that the end to aim at is assimilation to God, that virtue is in itself sufficient for happiness, but that it needs in addition, as instruments for use, first, bodily advantages like health and strength, sound senses and the like, and, secondly, external advantages such as wealth, good birth and reputation. But the wise man will be no less happy even if he be without these things. Again, he will take part in public affairs, will marry, and will refrain from breaking the laws which have been made. And as far as circumstances allow he will legislate for his own country, unless in the extreme corruption of the people he sees that the state of affairs completely justifies his abstention. He thinks that the gods take note of human life ® and that there are superhuman beings. He was the first to define the notion of good as that which is bound up with