Avicenna. The latinized name of Abu-Ali al Hoséen ben Abdallah Ibn Sina; a Persian philosopher, born 980 AD)., though generally referred to as an Arabian doctor. On account of his surprising learning he was called “the Famous”, and was the author of the best and the first alchemical works known in Europe. All the Spirits of the Elements were subject to him, so says the legend, and it further tells us that owing to his knowledge of the Elixir of Life, he still lives, as an adept who will disclose himself to the profane at the end of a certain cycle.
Source: H.P.Blavatsky - The Theosophical Glossary