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About this quote

What does it mean?
Descartes states his primary rule was to accept truth only when certain beyond doubt.
In plain terms
Accept truth only when certain.
What can you take from it?
Do not accept things without certainty.

Where it applies

  • learning
  • critical thinking

Putting it to work

  • fact checking
  • decision making

Questions to consider

  • When was the last time you were certain?
  • Is doubt a virtue?

Another view

Absolute certainty is often unattainable in practice.

More from Rene Descartes

  1. The greatest minds are capable of the greatest vices as well as of the greatest virtues.

    Permalink to quote #8
  2. Divide each difficulty into as many parts as is feasible and necessary to resolve it.

    Permalink to quote #10
  3. It is not enough to have a good mind. The main thing is to use it well.

    Permalink to quote #7

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