The book is generally regarded as the core text of Spare's philosophy. It covers both mystical and magical aspects of Spare's ideas. As the modern ideas on sigils (as now have become popular in chaos magic) and Spare's special theory on incarnation are for the first time introduced in this book.
Some chapters of the text are referred to internally but are omitted. Apparently that they were destroyed during World War II.[1]
The book had originally been planned as a mutus liber of illustrations only – "the Wisdom without words",[2] but was expanded later.
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