“Plotinus believed that the world is span between two polls. At one end is the divine light which he calls the One. Sometimes he calls it God. At the other end is absolute darkness, which receives none of the light from the One. But Plotinus' point is that this darkness actually has no existence. It simply is the absence of light - in other words, it 'is' not. All that exists is God, or the One, but in the same way that a beam of light grows progressively dimmer and is gradually extinguished, there is somewhere that the divine glow cannot reach.”