“Six days, six weeks. I doubt six months,” said Donald Rumsfeld, on February 7, 2003, about the duration of the Iraq war. “Whatever happens in Vietnam, I can conceive of nothing except military victory,” Dwight D. Eisenhower said in 1967. Four years before that, Robert McNamara asserted, “The war in Vietnam is going well and will succeed.”

In 1963, having left bread, butter, and milk for her sleeping children, Sylvia Plath stuck her head inside an oven. In 1974, having turned on her car in a closed garage, waiting for the carbon monoxide to kill her, Anne Sexton sat and drank vodka.

On the future of history, Thucydides speculated that since there are no “temples or monuments of magnificence” in Sparta, “future generations would find it very difficult to believe” that it once commanded two-fifths of the Peloponnesus; while those same generations would conclude from the impressive ruins of Athens that it was “twice as powerful as it in fact was.”

About how statements get written up by the press, Andy Warhol wrote, “It would always be different from what I’d actually said—and a lot more fun for me to read. Like if I’d said, ‘In the future everyone will be famous for fifteen minutes,’ it could come out ‘In fifteen minutes everyone will be famous.’ ” About the future, Andy Warhol also wrote, “I really do live for the future, because when I’m eating a box of candy, I can’t wait to taste the last piece. I don’t even taste any of the other pieces.”

“I’m ashamed of you, dodging that way. They couldn’t hit an elephant at this distance,” said Maj. Gen. John Sedgwick not long before a Confederate bullet struck his skull and killed him.