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About this quote

What does it mean?
Twain argues that false certainty is more dangerous than simple ignorance.
In plain terms
Believing wrong things is worse than knowing nothing at all.
What can you take from it?
False knowledge is more harmful than no knowledge.

Where it applies

  • debates
  • conspiracy theories
  • education

Putting it to work

  • verify claims
  • avoid false certainty

Questions to consider

  • How do you know what you believe?
  • What is the cost of being wrong?

Another view

Sometimes ignorance prevents action that false belief might encourage.

More from Mark Twain

  1. What gets us into trouble is not what we don't know. It's what we know for sure that just ain't so.

    Permalink to quote #162
  2. All you need in this life is ignorance and confidence; then success is sure.

    Permalink to quote #164
  3. A man cannot be comfortable without his own approval.

    Permalink to quote #161

Related quotes

  1. Only a very bad theologian would confuse the certainty that follows revelation with the truths that are revealed. They are entirely different things.

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  2. What the eye see and the ears hear, the mind believes. (1920)

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  3. It is a far, far better thing to have a firm anchor in nonsense than to put out on the troubled seas of thought.

    John Kenneth GalbraithJohn Kenneth Galbraith quote #7