"The heart has its reasons of which reason knows nothing"
About this Quote
The subtext is a challenge to the era’s rising Cartesian dream that clear reasoning can deliver certainty about everything worth knowing. Pascal, a brilliant mathematician who helped build that very dream, is an especially dangerous messenger: he’s not anti-reason; he’s exposing reason’s blind spots from the inside. The phrasing turns “reason” into a character with boundaries, almost a bureaucrat who can’t process certain documents. The heart, by contrast, “has its reasons” - it isn’t irrational, just operating with evidence that doesn’t translate into syllogisms.
Context sharpens the stakes. Pascal wrote amid religious conflict and philosophical upheaval; his Pensees are haunted by human fragility and the ache of metaphysical uncertainty. The line is also tactical: it legitimizes faith without pretending it’s provable like a theorem. You can’t bully belief into existence with logic; you also can’t dismiss belief as mere stupidity. Pascal’s brilliance is making that tension feel less like a cop-out and more like an honest map of the mind.
Quote Details
| Topic | Reason & Logic |
|---|---|
| Source | Blaise Pascal, Pensées (c.1669-1670), fragment often numbered 277: "Le coeur a ses raisons que la raison ne connait point." |
| Cite |
Citation Formats
APA Style (7th ed.)
Pascal, Blaise. (2026, January 15). The heart has its reasons of which reason knows nothing. FixQuotes. https://fixquotes.com/quotes/the-heart-has-its-reasons-of-which-reason-knows-5083/
Chicago Style
Pascal, Blaise. "The heart has its reasons of which reason knows nothing." FixQuotes. January 15, 2026. https://fixquotes.com/quotes/the-heart-has-its-reasons-of-which-reason-knows-5083/.
MLA Style (9th ed.)
"The heart has its reasons of which reason knows nothing." FixQuotes, 15 Jan. 2026, https://fixquotes.com/quotes/the-heart-has-its-reasons-of-which-reason-knows-5083/. Accessed 12 Feb. 2026.












