“It's too bad that stupidity isn't painful.”
Anton LaVey
“Two things are infinite: the universe and human stupidity; and I'm not sure about the the universe.”
Albert Einstein
“Just think of how stupid the average person is, and then realize half of them are even stupider!”
George Carlin
“Whenever a man does a thoroughly stupid thing, it is always from the noblest motives.”
Oscar Wilde
“There is nothing worse than aggressive stupidity.”
Johann Wolfgang von Goethe
“Scientists now believe that the primary biological function of breasts is to make males stupid.”
Dave Barry