In man's physical constitution the elements of which the whole universe is made, are found.

• In the bones the earth element, the rock.
• The flesh is made of the water element a little solidified.
• The fire-element is the heat in man's body, the glow, the expression in the face. When the fire is less, the expression of the face becomes faded.
• The skin shows the effect of the air element. It changes in accordance with the effect of the air upon it.
• The ether is shown in the hair, which is much less sensitive than any other part of the body. If we cut the skin or the flesh, we feel pain. When the hair is cut we feel nothing.