The Swedish Harold Camping. He was a scientist who at age 53 claimed that he had visions from God and that the coming of Christ would be in 1757. Nailed it. He continued to write many religious themed books, yada yada yada there is a Swedenborgian Church of North America in Washington and a General Church of the New Jerusalem, both founded on his principles.
No doubt Enjolras, the pure and sober youth, would have said to him, as the angel did to Swedenborg, “You eat too much.” We rather encouraged this amusing voracity, analogous to that of monkeys,
Théophile Gautier. My Private Menagerie / from The Works of Theophile Gautier Volume 19
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"Have you ever become interested in the doctrines of the Swedenborgians?"
Monseigneur Welcome was not a genius. He would have feared those sublimities whence some very great men even, like Swedenborg and Pascal, have slipped into insanity.
Victor Hugo. Les Miserables
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How ignorant did he think I was? I had read Owen and James and Huxley and Swedenborg and, for heaven's sake, Blavatsky,