In one of his works, this man uses the term "flagrat" to refer to the sense of sudden terror in man, and "lubet" to mean the lustful desire that leads man to good or evil. Two of his lesser-known works, Of the Threefold Life of Man and Forty Questions Concerning the Soul, were later cited by Nicolas Berdyaev for coining the term "ungrund" to describe an abyss of holy nothingness. While working as a shoemaker, he was often harassed by the local tanners guild, and was persecuted by Gregor Richter 
In one of his works, this man uses the term "flagrat" to refer to the sense of sudden terror in man, and "lubet" to mean the lustful desire that leads man to good or evil. Two of his lesser-known works, Of the Threefold Life of Man and Forty Questions Concerning the Soul, were later cited by Nicolas Berdyaev for coining the term "ungrund" to describe an abyss of holy nothingness. While working as a shoemaker, he was often harassed by the local tanners guild, and was persecuted by Gregor Richter for writing a work with the Latin title Aurora, which he wrote after watching sunlight reflect off of a pewter dish. Influenced by Paracelsus, he identified the Holy Trinity with salt, sulphur, and mercury in his book Mysterium Magnum. For 10 points, name this 16th century German mystic known for his holy visions.