"An optimist may see a light where there is none, but why must the pessimist always run to blow it out?"
About this Quote
The subtext is recognizably Cartesian even if the quote’s exact provenance is debated: doubt is valuable as a method, disastrous as a temperament. Descartes made skepticism productive by disciplining it - doubt everything, but for the sake of rebuilding knowledge on firmer ground. This aphorism draws a line between epistemic humility and performative negation. The optimist may hallucinate a candle; the pessimist, in this framing, is the person who can’t tolerate anyone else groping toward warmth, direction, or hope.
Culturally, it’s also a jab at a certain status economy: cynicism often passes as intelligence because it can puncture almost anything. Descartes flips that prestige. He implies the real philosophical failure isn’t being wrong in the direction of hope; it’s making other people’s hope your problem to extinguish.
Quote Details
| Topic | Optimism |
|---|---|
| Source | Later attribution: French Philosophers' Quotes (Farhad Hemmatkhah Kalibar) modern compilationID: DaMLEQAAQBAJ
Evidence:
... An optimist may see a light where there is none , but why must the pessimist always run to blow it out ? " René Descartes “ For to be possessed of a vigorous mind is not enough ; the prime requisite is rightly to apply it . " René Descartes ... |
| Cite |
Citation Formats
APA Style (7th ed.)
Descartes, Rene. (2026, February 7). An optimist may see a light where there is none, but why must the pessimist always run to blow it out? FixQuotes. https://fixquotes.com/quotes/an-optimist-may-see-a-light-where-there-is-none-1312/
Chicago Style
Descartes, Rene. "An optimist may see a light where there is none, but why must the pessimist always run to blow it out?" FixQuotes. February 7, 2026. https://fixquotes.com/quotes/an-optimist-may-see-a-light-where-there-is-none-1312/.
MLA Style (9th ed.)
"An optimist may see a light where there is none, but why must the pessimist always run to blow it out?" FixQuotes, 7 Feb. 2026, https://fixquotes.com/quotes/an-optimist-may-see-a-light-where-there-is-none-1312/. Accessed 12 Feb. 2026.










