The Moon is the primal substance reflecting the Light, waxing and waning as it goes through Transformation. The Earth is the human Body. Separate the Earth from the Fire, the Subtle from the Gross, gently and with great Ingenuity. It rises from Earth to Heaven and descends again to Earth, thereby combining within Itself the powers of both the Above and the Below. In Greek cosmology elements have an inherent direction.
Earth tends to move down and flames tend to leap up.
Fire is the part of you that wants to soar upward, it is the joyful, buoyant spirit. Meditate on ecstasy and your mind will rise to the Heaven World of the Sun and the Moon, the One Mind of Light and the One Thing, the source of all form. When you return, bring back the power of the Sun and let it be reflected in your body. See all things around you as the working of the One Mind of Light on the One Primary Substance. Since you carry the power of the Mind of Light within you, you too can work transformations in the One Substance.