This remarkable early tract was written by a Franciscan friar who denied the reality of night flight, the witches' Sabbat, and the work of the inquisitors themselves, whom he called heretics for refuting the Canon Episcopi. While not the first to oppose belief in witchcraft, Cassini wrote at a time when opposition to that belief was gaining strength. Cornell's copy is one of only two known copies in existence. Shown is a series of questions Cassini poses and answers, beginning with whether "the devil might move people from one place to the other in order to perpetuate evil deeds." (The answer is no.)