"The science of understanding, deconstructing, and reconstructing matter; however, it is not an all-powerful art. It is impossible to create something out of nothing. If one wishes to obtain something, something of equal value must be given. This is the Law of Equivalent Exchange, the basis of all alchemy. In accordance with this law, there is a taboo among alchemists. Human transmutation is strictly forbidden. For what could equal the value of a human soul."
Alchemy, is both a philosophy and an ancient practice focused on transmutation(changing one thing into another),creating useful substances and achieving ultimate wisdom ,
In the history of science, alchemy (from the Arabic work al-kimia) refers to both an early form of the investigation of nature and an early philosophical and spiritual discipline, both combining elements of chemistry, metallurgy, physics, medicine, astrology, semiotics, mysticism, spiritualism, and art all as parts of one greater force.
Alchemy has been practiced in Mesopotamia, Ancient Egypt, Persia, India, and China, in Classical Greece and Rome, in Muslim civilization, and then in Europe up to the 19th century—in a complex network of schools and philosophical systems spanning at least 2500 years.
It 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.
Alchemy has always been closely connected with Hermeticism, a philosophical and spiritual system that traces its roots to Hermes Trismegistus, a syncretic Egyptian-Greek deity and legendary alchemist. These two disciplines influenced the birth of Rosicrucianism, an important esoteric movement of the seventeenth century. In the course of the early modern period, mainstream alchemy evolved into modern chemistry.
Today the discipline is of interest mainly to historians of science and philosophy, and for its mystic, esoteric, and artistic aspects. Nevertheless, alchemy was one of the main precursors of modern sciences, and many substances and processes of ancient alchemy continue to be the mainstay of modern chemical and metallurgical industries.
Although alchemy takes on many forms, in pop culture it is most often cited in stories, films, shows, and games as the process used to change lead (or other elements) into gold. Also another form that alchemy takes is in the search for the Philosopher's Stone, in which to obtain the ability to transmute inexpensive metals such as lead into gold ("chrysopoeia" in the Greek language) or create an elixir that grants eternal life.