him to leave Italy; without him, the Abbey closed. Later life Tunisia, Paris, and London: 1923–1929 Crowley and Hirsig went to Tunis, where, dogged by continuing poor health, he unsuccessfully tried again to give up heroin, and began writing what he termed his "autohagiography", The Confessions of Aleister Crowley. They were joined in Tunis by the Thelemite Norman Mudd, who became Crowley's public relations consultant. Employing a local boy, Mohammad ben Brahim, as his servant, Crowley went with him on a retreat to Nefta, where they performed sex magic together. In January 1924, Crowley travelled to Nice, France, where he met with Frank Harris, underwent a series of nasal operations, and visited the Institute for the Harmonious Development of Man and had a positive opinion of its founder, George Gurdjieff. Destitute, he took on a wealthy student, Alexander Zu Zolar, before taking on another American follower, Dorothy Olsen. Crowley took Olsen back to Tunisia for a magical retreat in Nefta, where he also wrote To Man (1924), a declaration of his own status as a prophet entrusted with bringing Thelema to humanity. After spending the winter in Paris, in early 1925 Crowley and Olsen returned to Tunis, where he wrote The Heart of the Master (1938) as an account of a vision he experienced in a trance. In March Olsen became pregnant, and Hirsig was called to take care of her; she miscarried, following which Crowley took Olsen back to France. Hirsig later distanced herself from Crowley, who then denounced her. According to Crowley, Reuss had named him head of the O.T.O. upon his death, but this was challenged by a leader of the German O.T.O., Heinrich Tränker. Tränker called the Hohenleuben Conference in Thuringia, Germany, which Crowley attended. There, prominent members like Karl Germer and Martha Küntzel championed Crowley's leadership, but other key figures like Albin Grau, Oskar Hopfer, and Henri Birven backed Tränker by opposing it, resulting in a split in the O.T.O. Moving to Paris, where he broke with Olsen in 1926, Crowley went through a large number of lovers over the following years, with whom he experimented in sex magic. Throughout, he was dogged by poor health, largely caused by his heroin and cocaine addictions. In 1928, Crowley was introduced to young Englishman Israel Regardie, who embraced Thelema and became Crowley's secretary for the next three years. That year, Crowley also met Gerald Yorke, who began