Also, when we think of the sun and the moon, and of the stars and planets, we find that even the essence of these is to be found in man. It is this science that was known to the ancient people as alchemy, from which the word chemistry is derived. But the science of the ancients was concerned with the understanding or the study of man, of his body and of his mind. All other sciences they studied came from this particular science called alchemy. They discovered that all that man searches for outwardly he can find inwardly through the knowledge of this science.