A book by
Valla, a
humanist, that showed the papal claim to complete
authority was based on
Constantine's moving of the capital of the
Roman Empire and bestowing charge on the
Pope in the Eighth Century. This was a contradiction to the
Catholic Church's claim that they were a mediary between
God and mortals.
This along with The Doctrine of the Trinity are considered causes behind Martin Luther's reformation along with the debate over indulgences, questions about the authority of the clergy over sacraments, and intellectual, political, and economic developments.