The heresy of the Free Spirit was a pantheistic heresy of the European middle ages. The group practicing these beliefs was known as the Brethren of the Free Spirit.

Further reading:

• Robert Lerner, The Heresy of the Free Spirit in the Later Middle Ages (Berkeley, 1972)
• Raoul Vaneigem The Movement of the Free Spirit (1994, Zone Books)

External links:

• Anarchism in the Middle Ages