The Monarchomachs also claimed that if the sovereign persecuted true religion, he would violate the contract concluded between God and the people, who were thus granted a right of rebellion. They were inspired by Aristotle, Thomas Aquinas, and the School of Salamanca on the killing of "bad kings". This legimitization of tyrannicide may have inspired as much the friar Clément, who assassinated Henry III in 1589, as Ravaillac, who assassinated Henry IV in 1610. Rebellion against tyranny was considered not only as necessary, but as a divine right.