"If a philosophic theory is once ruled out of court, no one can tell when it will appear again"
About this Quote
The subtext is a critique of academic and cultural amnesia. When a community congratulates itself for having “moved past” a theory, it may be mistaking exhaustion for resolution. That’s how old metaphysics rebrands as “common sense,” how discredited social theories re-emerge as policy instincts, how yesterday’s superstition returns wearing a lab coat. Cohen’s phrasing “no one can tell when” adds a historian’s humility: ideas have long half-lives, and suppression can even increase their mystique.
Contextually, Cohen wrote in a period when logical positivism, pragmatism, and scientific method were reshaping what philosophy was allowed to sound like. His broader project was to defend a disciplined, fallibilist rationalism against both dogma and fashionable dismissals. The line is less nostalgia for lost systems than a warning against intellectual overconfidence: if you exile a theory by fiat rather than by argument, you’re not finishing the job. You’re scheduling a sequel.
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APA Style (7th ed.)
Cohen, Morris Raphael. (2026, January 16). If a philosophic theory is once ruled out of court, no one can tell when it will appear again. FixQuotes. https://fixquotes.com/quotes/if-a-philosophic-theory-is-once-ruled-out-of-92691/
Chicago Style
Cohen, Morris Raphael. "If a philosophic theory is once ruled out of court, no one can tell when it will appear again." FixQuotes. January 16, 2026. https://fixquotes.com/quotes/if-a-philosophic-theory-is-once-ruled-out-of-92691/.
MLA Style (9th ed.)
"If a philosophic theory is once ruled out of court, no one can tell when it will appear again." FixQuotes, 16 Jan. 2026, https://fixquotes.com/quotes/if-a-philosophic-theory-is-once-ruled-out-of-92691/. Accessed 22 Feb. 2026.






