Sound is the cause of the sky, sky is the cause of the air, air is the cause of fire, fire is the cause of water, and water is the cause of earth. In the sky there is only sound; in the air there are sound and touch; in the fire there are sound, touch and form; in water there are sound, touch, form and taste; and in the earth there are sound, touch, form, taste and smell. Therefore earth is the reservoir of all the qualities of the other elements. Earth is the sum total of all other elements. The earth has all five qualities of the elements, water has four qualities, fire has three, air has two, and the sky has only one quality, sound.