

A radical German theologian who turned church history on its head by championing heretics and mystics over institutional orthodoxy.
Gottfried Arnold began his career as a conventional Lutheran scholar but soon embarked on a profound intellectual rebellion. In 1699, he published his monumental and controversial 'Impartial History of the Church and of Heretics,' a work that deliberately inverted the standard narrative. Instead of vilifying figures condemned by the established church, Arnold presented them—the mystics, the dissenters, the so-called heretics—as the true bearers of pious Christian spirit. This act was less about heresy itself and more a scathing critique of the corruption and power politics he saw in state-sanctioned religion. His work sent shockwaves through Protestant circles and marked a pivotal moment in historical methodology, arguing for empathy and understanding over doctrinal condemnation. Later in life, his views softened, and he accepted a professorship and a pastoral post, but his early, revolutionary scholarship secured his lasting place as a pioneering and unorthodox thinker.
The biggest hits of 1666
The world at every milestone
He initially refused all academic positions and church offices on principle, believing them incompatible with true piety.
His 'Impartial History' was so controversial it was publicly burned by some authorities.
He was a close associate of Philipp Jakob Spener, a founder of Lutheran Pietism.
After his more radical youth, he married and had 12 children.
“I wrote the history of heretics to show the spirit often flees the institution.”