Never underestimate the power of human stupidity.
Robert A. Heinlein

No intelligent idea can gain general acceptance unless some stupidity is mixed in with it.
Fernando Pessoa

No sooner does man discover intelligence than he tries to involve it in his own stupidity.
Jacques Yves Cousteau

Nothing in all the world is more dangerous than sincere ignorance and conscientious stupidity.
Martin Luther King, Jr.

Nothing in the world is more dangerous than sincere ignorance and conscientious stupidity.
Martin Luther King, Jr.

One man alone can be pretty dumb sometimes, but for real bona fide stupidity, there ain't nothin' can beat teamwork.
Edward Abbey

Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.
Albert Einstein

People's ignorance really pisses me off. Stupidity is when you can't help it-ignorance is when you choose not to understand something.
Sarah McLachlan

Seriousness is stupidity sent to college.
P. J. O'Rourke

Some scientists claim that hydrogen, because it is so plentiful, is the basic building block of the universe. I dispute that. I say there is more stupidity than hydrogen, and that is the basic building block of the universe.
Frank Zappa

Strange as it may seem, no amount of learning can cure stupidity, and formal education positively fortifies it.
Stephen Vizinczey

Stubborn and ardent clinging to one's opinion is the best proof of stupidity.
Michel de Montaigne

Stupid as a man, say the women: cowardly as a woman, say the men. Stupidity in a woman is unwomanly.
Friedrich Nietzsche

Stupidity always accompanies evil. Or evil, stupidity.
Louise Bogan

Stupidity combined with arrogance and a huge ego will get you a long way.
Chris Lowe

Stupidity fuses notoriety and celebrity.
Suzanne Fields

Stupidity has a knack of getting its way.
Albert Camus

Stupidity is a talent for misconception.
Edgar Allan Poe

Stupidity is also a gift of God, but one mustn't misuse it.
Pope John Paul II

Stupidity is an elemental force for which no earthquake is a match.
Karl Kraus