"SF is the literature of the theoretically possible, and F is the literature of the impossible"
About this Quote
By contrast, labeling fantasy as “the impossible” is less an insult than a compact description of its contract with the audience. Fantasy doesn’t have to argue its case in the courtroom of science. It can be symbolic, mythic, moral, dreamlike. The point isn’t how the magic works; it’s what the magic is for.
The subtext is a cultural debate that has followed genre fiction for decades: which stories count as “real” speculation and which are “just” escapism. Anthony, a popular writer who moved easily between modes, is also smoothing the turf wars. He’s saying: different toolkits, different pleasures.
The irony is that the boundary is porous and everyone knows it. SF routinely smuggles in impossibilities (FTL travel, time paradoxes) dressed in lab coats, and fantasy often builds internally rigorous systems that feel more “theoretical” than some SF. The line isn’t physics; it’s posture.
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APA Style (7th ed.)
Anthony, Piers. (2026, January 15). SF is the literature of the theoretically possible, and F is the literature of the impossible. FixQuotes. https://fixquotes.com/quotes/sf-is-the-literature-of-the-theoretically-144860/
Chicago Style
Anthony, Piers. "SF is the literature of the theoretically possible, and F is the literature of the impossible." FixQuotes. January 15, 2026. https://fixquotes.com/quotes/sf-is-the-literature-of-the-theoretically-144860/.
MLA Style (9th ed.)
"SF is the literature of the theoretically possible, and F is the literature of the impossible." FixQuotes, 15 Jan. 2026, https://fixquotes.com/quotes/sf-is-the-literature-of-the-theoretically-144860/. Accessed 3 Feb. 2026.




