what we call evil is simply the absence of good, just like darkness is not a real thing, but only the absence of light. He asked what happens to a physical wound or sickness when we are healed. Does it flutter away from your body to a new host? Of course not; it simply disappears, showing that the injury was not a real thing, but only an absence of health. In the same way, evil is not real, it is only the absence of good.