Thomas Jefferson never wrote or said, “I’m a great believer in luck. The harder I work the more I seem to have.” The quip was crafted by San Francisco humorist Coleman Cox for a 1922 collection titled Listen to This.

In July 2003 details leaked of a new venture from the Defense Advanced Research Projects Agency: an online market for financial speculation on possible terrorist attacks, assassinations, and coups. “Futures markets have proven themselves to be good at predicting such things as elections results,” the Defense Department argued. “They are often better than expert opinions.” DARPA—already under fire for its proposed Total Information Awareness program—was forced to abandon the idea.

“The worst punishment God can devise for this sinner,” wrote Harper Lee—who loved casino gambling—in a 1990 letter, “is to make her spirit reside eternally at the Trump Taj Mahal in Atlantic City.”

It’s considered bad luck in parts of Mississippi for mourners to call a coffin pretty.

The Cincinnati Commercial complained in 1871 about the game of fly loo, a “detestable canker that destroys men’s souls.” Players selected sugar lumps and bet on which would attract a fly first. “Every afternoon from twenty to thirty of the very flower of our mercantile population retire to a private room and under locks and bolts give themselves up to this satanic game,” the article noted, “while the deserted ladies are languishing for a little male conversation below.”

“The contempt of risk and the presumptuous hope of success are in no period of life more active than at the age at which young people choose their professions,” wrote Adam Smith in 1776. “How little the fear of misfortune is then capable of balancing the hope of good luck.”