Swedenborg (1688-1772): assessor on Sweden's Board of Mines, author of scientific works, then from 1744 the visionary author of Arcana Coelestia and Heaven and Hell, describing the spiritual world in administrative detail, correspondences, societies, and the doctrine that heaven is a Grand Man. He died on the date he predicted.
The anecdotes that made him famous: the Stockholm fire he reportedly described from Gothenburg, 300 miles away, as it burned (1759), the queen's secret he supposedly returned from the dead to confirm. Kant investigated and could not dismiss them outright.
His system's lasting export: every earthly thing corresponds to a spiritual reality, the doctrine of correspondences that Blake, Baudelaire, and the Symbolists drank directly. Modern poetry's image-theory is partly Swedenborgian plumbing with the theology drained.
What do you do with a man whose engineering checks out and whose angels might too?