438. (13) A person can turn himself in the direction of either atmosphere, but in the measure that he turns to one, in the same measure he turns away from the other. Man was created to do what he does in freedom in accordance with reason, and this entirely as though on his own. Without these two faculties a person would not be a human being but an animal; for he would not receive anything flowing into him from heaven and adopt it as his own, and therefore nothing of eternal life could be implanted in him, since this must be implanted in him as his for it to be his. Moreover, because there is no freedom to turn in one direction unless there is as well the same freedom to turn in the other - as it is impossible to weigh anything in a balance unless the scales are able in equilibrium to incline to either side - so man has no freedom in accord with reason to move in the direction of good unless he has the freedom in accord with reason to move in the direction of evil, thus to move from right to left and from left to right - as freely in the direction of the infernal atmosphere, which is one of adultery, as in the direction of the heavenly atmosphere, which is one of marriage.