The Seven Spirits provides the essential message of William Booth’s officer training for the Salvation Army. They contain the substance of Booth’s addresses delivered at the 1904 International Congress of the Salvation Army in London. He puts forth the seven spirits he believes an effective officer must be possessed by: the spirit of divine life, of holiness, of supreme devotion, of light, of war, of faith, and of burning love. The Seven Spirits is a valuable key to understanding the philosophy and culture of the Salvation Army.