on the subject...
"nothing in all the world is more dangerous than sincere ignorance and conscientious stupidity." [MLK]
"against stupidity, the gods themselves contend in vain." [Nietzsche]
"The difference between stupidity and genius is that genius has its limits." - Albert Einstein
“Never underestimate the power of stupid people in large groups.” ― George Carlin
“I'll take crazy over stupid any day.” ― Joss Whedon
“Evil isn’t the real threat to the world. Stupid is just as destructive as Evil, maybe more so, and it’s a hell of a lot more common. What we really need is a crusade against Stupid. That might actually make a difference.” ― Jim Butcher, Vignette
“Stupidity is the same as evil if you judge by the results.” ― Margaret Atwood, Surfacing
“You have attributed conditions to villainy that simply result from stupidity.”
― Robert A. Heinlein, The Green Hills of Earth
“The two most common elements in the universe are Hydrogen and stupidity.”
― Harlan Ellison
“We keep on being told that religion, whatever its imperfections, at least instills morality. On every side, there is conclusive evidence that the contrary is the case and that faith causes people to be more mean, more selfish, and perhaps above all, more stupid.”
― Christopher Hitchens
“There is more stupidity than hydrogen in the universe, and it has a longer shelf life.”
― Frank Zappa
“When a great genius appears in the world you may know him by this sign; that the dunces are all in confederacy against him." -Jonathan Swift
“Never attribute to malice that which can be adequately explained by stupidity.”
― Robert J. Hanlon
“Humans beings always do the most intelligent thing…after they’ve tried every stupid alternative and none of them have worked”
― R. Buckminster Fuller
“Intelligence minus purpose equals stupidity.” ― Toba Beta, Master of Stupidity
“If stupidity got us in this mess, how come it can't get us out.” ― Will Rogers
“It is only because of their stupidity that they are able to be so sure of themselves.”
― Franz Kafka
“Smart people have the brains, but stupid people have the balls” ― Ana Sáez González