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.
在巴黎度过冬天后，1925年早先的时候克劳利与奥尔森回到了突尼斯并写了《大师之心》（The Heart of the Master）（1938）作为他在一次灵性经验中对于看到的景象的解释。