Austin Osman Spare (2007). “The Writings of Austin Osman Spare: Anathema of Zos, the Book of Pleasure and the Focus of Life”, p.18, Filiquarian Publishing, LLC.
Joseph Butler (1856). “The Analogy of Religion, Natural and Revealed, to the Constitution and Course of Nature: To which are Added, Two Brief Dissertations: on Personal Identity, and on the Nature of Virtue; and Fifteen Sermons”, p.490
"People think the book is a love-letter to Africa, but really it is a love-letter to my mother". Interview with Louisa Young, www.theguardian.com. March 14, 2002.