"One of the definitions of sanity is the ability to tell real from unreal. Soon we'll need a new definition"
About this Quote
The intent is both warning and provocation. Toffler, writing from a career obsessed with acceleration (“future shock,” information overload, the social whiplash of rapid change), isn’t describing a private mental breakdown so much as a public one. When technology, media, and institutions can manufacture convincing simulations at scale, “real vs. unreal” stops being a stable binary. The subtext is brutally modern: the burden of verification gets shoved onto individuals while the systems that produce confusion profit from it. If you’re exhausted, that’s not a personal failure; it’s the point.
What makes the quote work is its sly reframing of sanity as a moving target. We treat “sanity” like a timeless standard, but Toffler suggests it’s partly a contract between minds and their informational habitat. Change the habitat fast enough - through propaganda, advertising, spectacle, or now deepfakes and algorithmic feeds - and the contract breaks. His final sentence reads as prophecy and dare: if reality is becoming a contested interface, then mental health may depend less on certainty and more on adaptive skepticism, media literacy, and the humility to say “I don’t know yet.”
Quote Details
| Topic | Truth |
|---|---|
| Source | Evidence: One of the definitions of sanity, itself, is the ability to tell real from unreal. Shall we need a new definition? (Chapter 12, "The Experience Makers"; p. 226 in the 1970 Random House edition). The primary source is Alvin Toffler's 1970 book Future Shock. The wording commonly circulated online, "Soon we'll need a new definition", does not match the original text I found. In the book, the line appears in a discussion of "experiential production" and simulated versus real experience. A searchable scan of the text shows the passage at lines corresponding to p. 226, and secondary scholarship quoting the passage also attributes it to Future Shock, p. 226. The book was first published in July 1970 by Random House. The quote is therefore real but commonly misquoted in modern quotation sites. Other candidates (1) Future Crimes (Marc Goodman, 2015) compilation97.5% ... One of the definitions of sanity is the ability to tell real from unreal. Soon we'll need a new definition. ALVIN... |
| Cite |
Citation Formats
APA Style (7th ed.)
Toffler, Alvin. (2026, March 14). One of the definitions of sanity is the ability to tell real from unreal. Soon we'll need a new definition. FixQuotes. https://fixquotes.com/quotes/one-of-the-definitions-of-sanity-is-the-ability-126189/
Chicago Style
Toffler, Alvin. "One of the definitions of sanity is the ability to tell real from unreal. Soon we'll need a new definition." FixQuotes. March 14, 2026. https://fixquotes.com/quotes/one-of-the-definitions-of-sanity-is-the-ability-126189/.
MLA Style (9th ed.)
"One of the definitions of sanity is the ability to tell real from unreal. Soon we'll need a new definition." FixQuotes, 14 Mar. 2026, https://fixquotes.com/quotes/one-of-the-definitions-of-sanity-is-the-ability-126189/. Accessed 19 Mar. 2026.










