Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.
Never underestimate the power of stupid people in large groups.
Nothing in the world is more dangerous than sincere ignorance and conscientious stupidity.
Egotism is the anesthetic that dulls the pain of stupidity.
Stupidity has a knack of getting its way.
I am patient with stupidity but not with those who are proud of it.
If you pretend to be good, the world takes you very seriously. If you pretend to be bad, it doesn't. Such is the astounding stupidity of optimism.
In politics stupidity is not a handicap.
The difference between stupidity and genius is that genius has its limits.
Never underestimate the power of human stupidity.
There is no sin except stupidity.
The two most common elements in the universe are hydrogen and stupidity.
Talk sense to a fool and he calls you foolish.
The first method for estimating the intelligence of a ruler is to look at the men he has around him.
When a stupid man is doing something he is ashamed of, he always declares that it is his duty.
There is nothing worse than aggressive stupidity.
Only the wisest and stupidest of men never change.
Life is tough, but it's tougher when you're stupid.
Any man can make mistakes, but only an idiot persists in his error.
To forget one's purpose is the commonest form of stupidity.
There's a fine line between fishing and just standing on the shore like an idiot.
Men are born ignorant, not stupid. They are made stupid by education.
I have always noticed that people only think you are stupid if you do things differently from them.
Only worry about your own happiness, which doesn’t have to be limited by anyone else’s stupidity unless you allow it to be.
The best humor is offered up by the stupidity of your opponents.
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