Portrait of Friedrich Spee

Friedrich Spee

Jesuit, author of Cautio Criminalis

Lived
1591–1635
Country
Germany

Updated September 2026

About Friedrich Spee

Friedrich Spee was a German Jesuit priest, professor, and poet, most well known as a forceful opponent of witch trials and one who was an insider writing from the epicenter of the European witch-phobia. Spee argued strongly against the use of torture, and as an eyewitness he gathered a book full of details regarding its cruelty and unreliability. He wrote, "Torture has the power to create witches where none exist."

Biography from Wikipedia, CC BY-SA 4.0. Photo via Wikimedia Commons.

Sources: book lists and dates from Wikidata and Open Library, ratings from Open Library readers. Last updated September 2026.