270. (5) All evils and the falsities arising from them, both those inborn and those additionally acquired, have their seat in the natural mind. Evils and the falsities arising from them have their seat in the natural mind because that mind is in its form an image of the natural world, while the spiritual mind is in its form an image of heaven, and evil cannot be entertained in heaven. Consequently this latter mind is not open from birth, but has only the potential capability of being opened. The natural mind takes its form also in part from substances of the natural world, whereas the spiritual mind takes its form solely from substances of the spiritual world, substances which are preserved by the Lord in their integrity in order that a person may become human. For the human being is born an animal, but becomes human.  The natural mind with all its constituents is coiled into helixes spiraling from right to left, while the spiritual mind is coiled into helixes spiraling from left to right. Thus these minds turn in directions contrary to each other-evidence that evil has its seat in the natural mind, and that the natural mind of itself acts in opposition to the spiritual mind. The spiraling from right to left, moreover, is directed downward, thus toward hell, whereas the spiraling from left to right goes upward, thus toward heaven. The fact of this has become apparent to me from the following observation, that an evil spirit cannot spin his body around from left to right, but only from right to left, while a good spirit can spin his body around only with difficulty from right to left, but easily from left to right. Their spinning around accords with the flow of the interior elements of their mind.