Directorium Inquisitorum

The Directorium Inquisitorum is Nicholas Eymerich's most prominent and enduring work, which he had composed as early as 1376. Eymerich had written an earlier treatise on sorcery, perhaps as early as 1359, which he extensively reworked into the Directorium Inqusitorum The Directorium Inquisitorum defined witchcraft, and described means for discovering witches. In compiling the book, Eymerich used many of the magic texts he had previously confiscated from accused sorcerers. It can also be considered as an assessment of a century and half of official Inquisition in the conquered "albigensian" country.