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About this quote

What does it mean?
Errors often stem from rigid belief in falsehoods rather than simple ignorance.
In plain terms
Trouble comes from being sure of wrong facts, not just lacking knowledge.
What can you take from it?
Question fixed beliefs to avoid mistakes.

Where it applies

  • scientific debates
  • policy making
  • daily decisions

Putting it to work

  • check assumptions
  • stay open to new data

Questions to consider

  • What beliefs might you hold incorrectly?
  • How do you test your certainty?

Another view

Ignorance can also lead to serious trouble.

More from Mark Twain

  1. A man cannot be comfortable without his own approval.

    Permalink to quote #161
  2. There is something worse than ignorance, and that's knowing what ain't so.

    Permalink to quote #163
  3. Never try to teach a pig to sing. It wastes time and annoys the pig.

    Permalink to quote #160

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