shortly after an appearance of Halley's Comet and predicted that his death would accompany it as well, writing in 1909: "I came in with Halley's Comet in 1835; it's coming again next year, and I expect to go out with it. It would be a great disappointment in my life if I don't. The Almighty has said, no doubt: 'Now here are these two unaccountable freaks; they came in together, they must go out together. He died of a heart attack the day after the comet was at its closest to the Sun.

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