"air (responsible for forming breath), earth and water (the passive and physical part of the earth).

The breath (which the soul is a part of) and the earth (which the body is part of) ".
Really good post but the relation of air to breath to soul isn't logical (which is everything stoicism stands for), Air is matter while the soul(if its a thing) is more of the concept you explained here "The mind is like a clean slate at birth and forms its cognitive 'expertise' from different sensory impressions which it interprets and stores as memories and concepts over time." ,The you in you ,that part of you that isn't your body is the collection of your experiences (all data recorded from your senses),your thought and your emotions .