The Focus of Life, The Mutterings of AOS is a comprehensive treatise written and illustrated by Austin Osman Spare on key occult concepts he introduced in his previous writings. The book first published in 1921 by the Morland Press and edited by Fredrick Carter with an introduction by Francis Marsden. The book contains 11 full page illustrations. The first edition was quarter vellum with buckram sides, lettered in gold on the spine "The Focus of Life". Released in 50 copies, numbered and signed on the half-title.