The Malleus Maleficarum or 'Hammer of Witches' is the best known and the most important treatise on witchcraft. It endorses extermination of witches and for this purpose develops a detailed legal and theological theory. It was a bestseller, second only to the Bible in terms of sales for almost 200 years. It was written by the Catholic clergyman Heinrich Kramer and first published in 1487. The Malleus elevates sorcery to the criminal status of heresy and prescribes inquisitorial practices for sec ...