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Open mind Quote by C.S. Lewis

“An open mind, in questions that are not ultimate, is useful. But an open mind about the ultimate foundations either of Theoretical or of Practical Reason is idiocy. If a man’s mind is open on these things, let his mouth at least be shut.” quote by C.S. Lewis
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““An open mind, in questions that are not ultimate, is useful. But an open mind about the ultimate foundations either of Theoretical or of Practical Reason is idiocy. If a man’s mind is open on these things, let his mouth at least be shut.””

C.S. Lewis

About This Quote

An open mind is valuable for non‑ultimate questions, but remaining open about fundamental truths is foolish; silence is wiser.

In simple terms: Question everything except core truths.

Key Takeaway

Know when to speak and when to stay silent.

Themes

philosophy critical thinking communication

Mood

thoughtful cautious

Type

philosophical inspirational

When to use this quote

  • debates
  • academic lectures
  • ethical dilemmas
  • personal convictions

Key Concepts

epistemology pragmatism

Questions to Reflect On

  • When should you challenge foundational beliefs?
  • How do you decide which questions merit openness?
A Different Perspective

Rigid adherence to dogma can limit growth.

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