Argenteum Astrum, also known as Argentinum Astrum, Argentinium Astrum (Latin for "silver star") or Astron Argon (Greek for "silver star"), and often referred to as A∴A∴, was a magical order created by Aleister Crowley after leaving the Hermetic Order of the Golden Dawn.
This magical fraternity is a Thelemic organization whose announced goals are the pursuit of light and knowledge. Heavily influenced by the works and leadership of Aleister Crowley, the holy book of the order is Liber AL vel Legis, the book of the law. The motto, much like that of the O.T.O., is "Do what thou wilt," "Love is the Law, Love under Will."