Things came to a head a year later, in 1765, when he, now forty-one, read the Swedish mystic Emmanuel Swedenborg (1688–1772). In Heavenly Secrets (8 vol., 1749–56), Swedenborg relates his visions of angels, describing their spiritual world in detail. Kant had been intrigued by the hearsay of the clairvoyant’s exploits, but when he read the work, he recognized it as a fraud.