Alice Ann Bailey, known as Alice A. Bailey or AAB to her followers, was a writer and theosophist in what she termed "Ageless Wisdom". This included occult teachings, "esoteric" psychology and healing, astrological and other philosophic and religious themes. Alice Bailey was born as Alice LaTrobe Bateman, in Manchester, England. She moved to the United States in 1907, where she spent most of her life as a writer and teacher.
Her works, written between 1919 and 1949, describe a wide-ranging system of esoteric thought covering such topics as how spirituality relates to the solar system, meditation, healing, spiritual psychology, the destiny of nations, and prescriptions for society in general. She described the majority of her work as having been telepathically dictated to her by an Master of Wisdom, initially referred to only as "the Tibetan", or by the initials "D.K.", later identified as Djwal Khul. Her followers refer to her writings as The Alice A. Bailey material, or sometimes, as the AAB material.
Her writings were influenced by the works of Madame Blavatsky. Though Bailey's writings differ from the orthodox Theosophy of Madame Blavatsky, they also have much in common with it. She wrote about religious themes, including Christianity, though her writings are fundamentally different from many aspects of Christianity and of other orthodox religions. Her vision of a unified society includes a global "spirit of religion" different from traditional religious forms and including the concept of the Age of Aquarius.