Western Classical Element Theory can be seen as a metaphor the human condition where fire is will and action, air is reason, water is the passions and spirit, and earth is the physical.
Astrology is a system of divination which uses symbolism and mysticism to draw insight from the relative position of the stars. The easily debatable aside, astrology and related divination techniques like the Tarot, palmistry, and iChing are art-forms meant for metaphysical exploration and the examination of the human condition.
Isaac Newton produced many well-known works in math, astronomy, and physics, but he produced about as many unpublished works which dealt with theology, alchemy, and the occult.
Astrology is a system of divination that assigns meaning to planets and their positions.