Founder of the ancient sect of Quietists, was a Spaniard, of a rich and honorable family. He entered into priest's orders young, but would accept no preferment in the church. He possessed great talents, and was ardently pious, without any of the austerities of the Romish religious orders. He went to Rome, where, in 1675, he published his "Spiritual Guide," which gave him universal reputation. The Jesuits and Dominicans, envious at his success, charged him with heresy, and at last succeeded in getting him condemned by the Inquisition. He died of torment in their dungeons, a few years after.