Quotes about stupidity
page 5

“Power is okay, and stupidity is usually harmless. Power and stupidity together are dangerous".”
Source: The Name of the Wind

“You shouldn't believe everything you hear you're young, not stupid.”
Source: The Wishsong of Shannara
“When you're surrounded by stupidity, self-preservation isn't a sin.”
Source: Riveted

“It's only because of their stupidity that they're able to be so sure of themselves.”
Variant: It is only because of their stupidity that they are able to be so sure of themselves.
Source: The Trial

This Business of Living (1935-1950)
Source: Il mestiere di vivere: Diario 1935-1950

“I am patient with stupidity but not with those who are proud of it.”
Source: The Last Years of a Rebel (1967), p. 24

“The only stupid thing about words is the spelling of them.”

“She looked at nice young men as if she could smell their stupidity.”
Source: Shield of Thunder

“sometimes i wish i'd been an englishman; american life is so damned dumb and stupid and healthy”
Source: This Side of Paradise

“When life gives you lemons… choke on them and die… you stupid lemon eater.”

“Intelligent men are cruel. Stupid men are monstrously cruel.”
The Star Rover
Variant: Intelligent men are cruel. Stupid men are monstrously cruel

Source: The Diamond Age: or, A Young Lady's Illustrated Primer

“All the history of human life has been a struggle between wisdom and stupidity.”
Source: The Amber Spyglass

“Happy birthday. And next time? Eat the stupid cupcake.”
Source: Let Them Eat Cake

“I’m going. But before I do, let me congratulate all of you on your stupidity. (Fury)”
Source: Dead After Dark

“You want me to do what? What part of stupid crawled up your sphincter and died?” – Caleb”
Source: Invincible

“You simply cannot tell other people they are stupid, even if they really are stupid.”
Source: The Way I See It: A Personal Look at Autism & Asperger's
“To the stupidity of men, " Dakota said, raising a glass. "And my brother, who is their king.”
Source: Almost Perfect

“Human: That's stupid. Isn't there grass on both sides?”
Source: Closer
“… the greatest weapon against big stupid men was a sharp mind.”
Source: Froi of the Exiles

“Government! Three fourths parasitic and the other fourth Stupid fumbling.”
Source: Stranger in a Strange Land
“How stupid lovers can be! But if they were not, there would be no story.”
Source: The Courts of Love

Source: Reviewing Blueprints: Solving the Mystery of Evolution (1989) by Maitland A. Edey and Donald C. Johanson
Source: Last sentence expanded upon in "Ignorance is No Crime" (2001) (see below)
Context: So to the book's provocation, the statement that nearly half the people in the United States don't believe in evolution. Not just any people but powerful people, people who should know better, people with too much influence over educational policy. We are not talking about Darwin's particular theory of natural selection. It is still (just) possible for a biologist to doubt its importance, and a few claim to. No, we are here talking about the fact of evolution itself, a fact that is proved utterly beyond reasonable doubt. To claim equal time for creation science in biology classes is about as sensible as to claim equal time for the flat-earth theory in astronomy classes. Or, as someone has pointed out, you might as well claim equal time in sex education classes for the stork theory. It is absolutely safe to say that if you meet somebody who claims not to believe in evolution, that person is ignorant, stupid or insane (or wicked, but I'd rather not consider that).
If that gives you offence, I'm sorry. You are probably not stupid, insane or wicked; and ignorance is no crime in a country with strong local traditions of interference in the freedom of biology educators to teach the central theorem of their subject.

“Like your zodiac sign? Percy asked. 'I'm a Leo.
'No, stupid,' Leo said. I'm a Leo. You're a Percy.”
Variant: Like the zodiac sign?' Percy asked. 'I'm a Leo.'
'No, stupid,' Leo said, 'I'm a Leo. You're a Percy.
Source: The Blood of Olympus

Source: The Complete Essays

“Never be a spectator of unfairness or stupidity. The grave will supply plenty of time for silence.”

“The greatest danger of bombs is in the explosion of stupidity that they provoke.”
Le plus grand danger de la bombe est dans l'explosion de bêtise qu'elle provoque.
Pour Jean Grave, Le Journal (19 Feb 1894)

Source: The Best American Essays 2007
Source: By the Time You Read This, I'll Be Dead

“Egotism is the anesthetic that dulls the pain of stupidity”
Source: Gunmetal Magic

“The most hopelessly stupid man is he who is not aware that he is wise.”
Source: The Foundation series (1951–1993), Second Foundation (1953), Chapter 8 “Seldon’s Plan”

“A man must be a little mad if he does not want to be even more stupid.”
Book III, Ch. 9
Essais (1595), Book III

“There is no such thing as an evil genius, as evil in it's self is stupidity.”
Source: The Wizard of Ooze
“A stupid ruler is much more of a problem than an insane one.”
Source: Dragon Blood

“It is a brave and stupid thing, a beautiful thing, to waste one's life for love.”
Source: The Confessions of Max Tivoli