Alchemy is part of the mystical and mystery traditions of both East and West. In the West, it dates to ancient Egypt, where adepts first developed it as an early form of chemistry and metallurgy. Egyptians alchemists used their art to make alloys, dyes, perfumes and cosmetic jewelry, and to embalm the dead.
The early Arabs made significant contributions to alchemy, such as by emphasizing the mysticism of numbers (quantities and lengths of time for processes). The Arabs also gave us the term 'alchemy', from the Arabic term 'alchimia', which loosely translated means 'the Egyptian art'.
During medieval and Renaissance times, alchemy spread through the Western world, and was further developed by Kabbalists, Rosicrucians, astrologers and other occultists. It functioned on two levels: mundane and spiritual. On a mundane level, alchemists sought to find a physical process to convert base metals such as lead into gold. On a spiritual level, alchemists worked to purify themselves by eliminating the "base" material of the self and achieving the 'gold' of enlightenment.
By Renaissance times, many alchemists believed that the spiritual purification was necessary in order to achieve the mundane transformations of metals.
The alchemists relied heavily upon their dreams, inspirations and visions for guidance in perfecting their art. In order to protect their secrets, they recorded diaries filled with mysterious symbols rather than text. These symbols remain exceptionally potent for changing states of consciousness.