Stoic Theology.—The Stoics, on the contrary, held that the universe is controlled by God, and in the last resort is God. The sole ultimate reality is the divine Mind, which expresses itself in the world-process. But only matter exists, for only matter can act and be acted upon; mind therefore is matter in its subtlest form, Fire or Breath or Aether. The primal fiery Spirit creates out of itself the world that we know, persists in it as its heat or soul or 'tension,' is the cause of all movement and all life, and ultimately by a universal conflagration will reabsorb the world into itself. But there will be no pause: at once the process will begin again, unity will again pluralize itself, and all will repeat the same course as before. Existence goes on for ever in endlessly recurring cycles, following a fixed law or formula (Aoyos – [actually those are supposed to be the greek characters for ‘logos’]); this law is Fate or Providence, ordained by God: the Stoics even said that the 'Logos' is God. And the universe is perfectly good: badness is only apparent, evil only means the necessary imperfection of the parts viewed separately from the whole.
The Stoic system then was determinist: but in it nevertheless they found room for freedom of the will. Man's acts like all other occurrences are the necessary effects of causes; yet man's will is free, for it rests with him either willingly to obey necessity, the divine ordinance, or to submit to it with reluctance. His happiness lies in using his divine intellect to understand the laws of the world, and in submitting his will thereto.