The Malleus Maleficarum (Published by Heinrich Kramer and James Sprenger around 1487)
“The question arises whether people who hold that witches do not exist are to be regarded as notorious heretics, or whether they are to be regarded as gravely suspect of holding heretical opinions. It seems the first opinion is the correct one.”
- From The Malleus Maleficarum (Part I, Question I) by Heinrich Kramer and James Sprenger, translated by Montague Summers (Dover Publications, 1971).