Abraham Lincoln (attributed): ‘Tis better to be silent and be thought a fool, than to speak and remove all doubt.

Albert Einstein: Great ideas often receive violent opposition from mediocre minds.

Albert Einstein: Two things are infinite: the universe and human stupidity; and I’m not sure about the universe.

Aldous Huxley: At least two thirds of our miseries spring from human stupidity, human malice and those great motivators and justifiers of malice and stupidity, idealism, dogmatism and proselytizing zeal on behalf of religious or political idols.

Aldous Huxley: At least two thirds of our miseries spring from human stupidity, human malice and those great motivators and justifiers of malice and stupidity, idealism, dogmatism and proselytizing zeal on behalf of religious or political idols.

Bertrand Russell: Most people would die sooner than think; in fact, they do.

Bill Cosby: A word to the wise ain’t necessary, it’s the stupid ones who need the advice.

Edwin Land: Creativity is the sudden cessation of stupidity.

Elbert Hubbard: Genius may have its limitations, but stupidity is not thus handicapped.

Isaac Asimov: [W]hen people thought the Earth was flat, they were wrong. When people thought the Earth was spherical they were wrong. But if you think that thinking the Earth is spherical is just as wrong as thinking the Earth is flat, then your view is wronger than both of them put together.

John Stuart Mill: Conservatives are not necessarily stupid, but most stupid people are conservatives.

Malcolm Forbes: The dumbest people I know are those who know it all.

Ralph Waldo Emerson: It is one of the blessings of old friends that you can afford to be stupid with them.

Sam Levenson: It’s so simple to be wise. Just think of something stupid to say and say the opposite.
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