"Thinking is one thing no one has ever been able to tax"
About this Quote
The subtext is less libertarian triumphalism than a pragmatic theory of freedom. Kettering isn’t arguing that people live beyond constraint; he’s pointing out the one domain where constraint is hardest to enforce. You can regulate behavior, not imagination. That distinction matters in an industrial America where efficiency worship and bureaucratic growth threatened to standardize life. Coming from a man associated with General Motors and industrial R&D, it also reads as a defense of creative labor inside systems that want outputs. Innovation depends on an inner surplus the ledger can’t quite capture.
The barb, of course, is that society keeps trying. Schools grade “originality.” Corporations measure “innovation.” Platforms convert thought into data. Even self-help culture turns inner life into productivity. Kettering’s sentence works because it holds up an un-taxable ideal while daring you to notice how quickly the world invents new ways to invoice what used to be private.
Quote Details
| Topic | Witty One-Liners |
|---|---|
| Source | Attributed to Charles F. Kettering; recorded on Wikiquote (Charles F. Kettering) as: "Thinking is one thing that no one has ever been able to tax." |
| Cite |
Citation Formats
APA Style (7th ed.)
Kettering, Charles F. (2026, January 14). Thinking is one thing no one has ever been able to tax. FixQuotes. https://fixquotes.com/quotes/thinking-is-one-thing-no-one-has-ever-been-able-137419/
Chicago Style
Kettering, Charles F. "Thinking is one thing no one has ever been able to tax." FixQuotes. January 14, 2026. https://fixquotes.com/quotes/thinking-is-one-thing-no-one-has-ever-been-able-137419/.
MLA Style (9th ed.)
"Thinking is one thing no one has ever been able to tax." FixQuotes, 14 Jan. 2026, https://fixquotes.com/quotes/thinking-is-one-thing-no-one-has-ever-been-able-137419/. Accessed 9 Feb. 2026.









