sentences:  According to tradition, Gardner claimed, the book was burned after a person died, so that it would not be discovered that they had been a witch.Gerald Gardner did not mention any such thing as a "Book of Shadows" in his 1949 (though written three years earlier), novel about mediaeval witchcraft, "High Magic's Aid".Doreen Valiente claimed that this was because at the time, Gardner had not yet conceived of the idea, and only invented it after writing his novel.