"The most formidable weapon against errors of every kind is reason"
About this Quote
The line works because it fuses Enlightenment confidence with revolutionary urgency. “Formidable” is doing heavy lifting: reason isn’t gentle persuasion or polite debate; it’s pressure applied to a system. Paine’s intent is practical. He’s offering a method that doesn’t rely on pedigree, revelation, or tradition. Anyone can pick up this weapon. That democratizing subtext is the real provocation: if reason is available to the common reader, then elites lose their monopoly on truth.
There’s also a subtle rhetorical trap here. By framing error as something that can be fought, Paine implies it’s organized, persistent, and invested in staying alive. “Errors of every kind” suggests the enemy isn’t one doctrine but a whole ecosystem of comforting falsehoods. Reason, then, isn’t just logical correctness; it’s a moral posture - the refusal to be managed by fear, myth, or habit.
Read in context of Common Sense and The Rights of Man, the quote is less self-help mantra than a recruitment poster for civic adulthood: stop outsourcing your judgment, because your ignorance is someone else’s power.
Quote Details
| Topic | Reason & Logic |
|---|---|
| Source | Help us find the source |
| Cite |
Citation Formats
APA Style (7th ed.)
Paine, Thomas. (2026, January 15). The most formidable weapon against errors of every kind is reason. FixQuotes. https://fixquotes.com/quotes/the-most-formidable-weapon-against-errors-of-10463/
Chicago Style
Paine, Thomas. "The most formidable weapon against errors of every kind is reason." FixQuotes. January 15, 2026. https://fixquotes.com/quotes/the-most-formidable-weapon-against-errors-of-10463/.
MLA Style (9th ed.)
"The most formidable weapon against errors of every kind is reason." FixQuotes, 15 Jan. 2026, https://fixquotes.com/quotes/the-most-formidable-weapon-against-errors-of-10463/. Accessed 12 Feb. 2026.











