"The only unnatural sex act is that which you cannot perform"
About this Quote
The subtext is combative. Mid-century America treated sexuality as a courtroom where normality was the evidence and shame was the verdict. Kinsey flips the burden of proof: if adults can do it, it’s part of the human repertoire, not an offense against nature. That move also exposes how “unnatural” often functions as a euphemism for “socially disapproved,” a label that changes with fashion, class, gender roles, and whose pleasure is being centered.
Context matters because Kinsey wasn’t floating in abstraction; he was building his case from thousands of interviews that revealed how common supposedly rare behaviors were. His famous reports didn’t merely catalogue sex acts; they embarrassed the culture by showing that private life refused to obey public virtue. The line’s provocation is strategic: it collapses a moral hierarchy into a neutral baseline, daring critics to admit they’re not defending nature, they’re defending a social order.
It’s also a tell of Kinsey’s limits. By grounding ethics in feasibility, he sidesteps questions of consent, coercion, and harm - the issues that actually should distinguish acceptable sex from unacceptable sex. That omission is why the sentence still sparks: liberating in its de-shaming impulse, incomplete as a moral map.
Quote Details
| Topic | Witty One-Liners |
|---|---|
| Source | Help us find the source |
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Citation Formats
APA Style (7th ed.)
Kinsey, Alfred. (2026, January 17). The only unnatural sex act is that which you cannot perform. FixQuotes. https://fixquotes.com/quotes/the-only-unnatural-sex-act-is-that-which-you-40959/
Chicago Style
Kinsey, Alfred. "The only unnatural sex act is that which you cannot perform." FixQuotes. January 17, 2026. https://fixquotes.com/quotes/the-only-unnatural-sex-act-is-that-which-you-40959/.
MLA Style (9th ed.)
"The only unnatural sex act is that which you cannot perform." FixQuotes, 17 Jan. 2026, https://fixquotes.com/quotes/the-only-unnatural-sex-act-is-that-which-you-40959/. Accessed 12 Feb. 2026.







