Babalon—also known as The Scarlet Woman, The Great Mother, or the Mother of Abominations—is a godess found in the mystical system of Thelema, which was established in 1904 with Aleister Crowley's writing of The Book of the Law. In her most abstract form, she represents the female sexual impulse and the liberated woman; although she can also be identified with Mother Earth, in her most fertile sense. At the same time, Crowley believed that Babalon had an earthly aspect in the form of a spiritual office, which could be filled by actual women—usually as a counterpart to his own identification as To Mega Therion (The Great Beast)—whose duty was then to help manifest the energies of the current Aeon of Horus.