American author Mark Twain was born exactly two weeks after the appearance of Halley's Comet in 1835. A fact which, by itself, isn't all that interesting. However, many years later, this is what he said:
"I came in with Halley's comet in 1835. It is coming again next year, and I expect to go out with it. It will be the greatest disappointment of my life if I don't go out with Halley's comet. The Almighty has said, no doubt: 'Now here are these two unaccountable freaks; they came in together, they must go out together.'"
Guess what? Twain died on 21 April 1910, the day following the comet's subsequent perihelion.