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Editor’s Note: This article previously appeared in a different format as part of The Atlantic’s Notes section, retired in 2021.

“What’s happening now is a powerful countervailing force where people are saying, ‘Stop the world, I want to get off it. I want to return to previous certainties,’” —Mark Leonard, who studies European policy, on Brexit.

“So it is almost certain unless something dramatic changes, 25 percent of Puerto Rico is going to get Zika,” —Anthony Fauci, an immunologist.

“A reason you see all the time, but virtually nobody mentions when they’re defending the legality of assault weapons after a mass shooting, is that they’re a whole lot of fun to shoot,” —Robert Spitzer, a political science professor.

“It’s difficult to see nations sort themselves out before your very eyes, and it points to troubled times ahead,”an Atlantic reader, on Britain’s future.

(Previous quotes from our sources here)