"Only two things are infinite, the universe and human stupidity, and I'm not sure about the former"
About this Quote
The real barb is the tag: “and I’m not sure about the former.” That’s scientific skepticism weaponized as comedy. Einstein isn’t just calling people dumb; he’s mocking our confidence. We pretend to understand the universe, to map it, to own it with equations and declarations. His doubt about the universe’s infinity is legitimate physics, but it also doubles as a moral diagnosis: we are more certain about our judgments of each other than about reality itself.
Context matters because Einstein’s public persona became shorthand for genius in an era intoxicated by progress and traumatized by its consequences. After two world wars and the dawn of nuclear power, “human stupidity” isn’t casual mischief; it’s collective, bureaucratic, catastrophic. The joke gives you permission to laugh, then leaves the aftertaste: the darkest force in the room may be the one we keep underestimating, precisely because it comes wearing our own face.
Quote Details
| Topic | Witty One-Liners |
|---|---|
| Source | Help us find the source |
| Cite |
Citation Formats
APA Style (7th ed.)
Einstein, Albert. (2026, January 15). Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. FixQuotes. https://fixquotes.com/quotes/only-two-things-are-infinite-the-universe-and-25316/
Chicago Style
Einstein, Albert. "Only two things are infinite, the universe and human stupidity, and I'm not sure about the former." FixQuotes. January 15, 2026. https://fixquotes.com/quotes/only-two-things-are-infinite-the-universe-and-25316/.
MLA Style (9th ed.)
"Only two things are infinite, the universe and human stupidity, and I'm not sure about the former." FixQuotes, 15 Jan. 2026, https://fixquotes.com/quotes/only-two-things-are-infinite-the-universe-and-25316/. Accessed 13 Feb. 2026.








