Who said, "A little knowledge is a dangerous thing"?

The line is from English writer Alexander Pope’s poem An Essay on Criticism.

It actually reads “A little learning is a dangerous thing.”

How long was J. Edgar Hoover in charge of the FBI? Hoover directed the Bureau of Investigation for 48 years, from 1924 until his death in 1972. The Bureau of Investigation was renamed the Federal Bureau of Investigation in 1935. Most know it as…
Who coined the slogan America, Love It or Leave It? The slogan was invented by columnist Walter Winchell (1897-1972) in 1940.
What are shooting stars? Shooting stars are not stars but meteorites, particles from space entering and burning up in the earth's atmosphere.
How big is a hockey puck? Usually made of vulcanized rubber, an ice hockey puck is 3 inches in diameter, 1 inch thick, and weighs 5.5 to 6 ounces.
How many U.S. presidents have been assassinated? Four presidents have been assassinated. Abraham Lincoln in 1865, James A. Garfield in 1881, William McKinley in 1901, and John F. Kennedy in 1963.