“Common sense is the most fairly distributed thing in the world, for each one thinks he is so well-endowed with it that even those who are hardest to satisfy in all other matters are not in the habit of desiring more of it than they already have.”
- March 31, 1596 – February 11, 1650
- French
- Philosopher, Mathematician, Scientist, Father of Modern Philosophy
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Quote
“Common sense is the most fairly distributed thing in the world, for each one thinks he is so well-endowed with it that even those who are hardest to satisfy in all other matters are not in the habit of desiring more of it than they already have.”
Explanation
In this ironic observation, Descartes reflects on the universal belief in one’s own rationality, noting that while people may doubt their wealth, intelligence, or beauty, they rarely doubt their own common sense. He highlights a form of cognitive bias—the tendency for individuals to overestimate their own judgment and assume they possess sufficient reason, even when they may not. This self-satisfaction, Descartes suggests, prevents people from seeking improvement in how they think.
This quote appears at the beginning of Discourse on the Method, where Descartes outlines his approach to acquiring knowledge. The 17th century was a time of intellectual upheaval, and Descartes sought to move beyond unexamined beliefs by constructing a new method grounded in clear reasoning. By pointing out that everyone assumes they already have enough common sense, he challenges readers to question their own assumptions and to pursue truth with humility and method, not complacency.
In modern life, Descartes’ point remains strikingly relevant. From political discourse to social media debates, people often cling to their views with unshakable confidence, regardless of evidence. Descartes reminds us that genuine wisdom begins when we recognize the limits of our judgment and commit to improving it—not through pride, but through thoughtful inquiry.
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