Skip to main content

Daily Inspiration Quote by Friedrich Nietzsche

"The irrationality of a thing is no argument against its existence, rather a condition of it"

About this Quote

Nietzsche pulls a rug out from under the Enlightenment habit of treating reason as a border patrol: if you can’t justify it, it shouldn’t be allowed to count as real. His line is a provocation dressed as a principle. “Irrationality” isn’t a defect to be corrected; it’s often the very signature of life as it is actually lived. Belief, desire, cruelty, loyalty, art, faith, ressentiment, even the itch for “truth” itself - these aren’t clean syllogisms. They persist precisely because they answer needs deeper than logic: the need to endure, to dominate, to belong, to give suffering a shape.

The intent is tactical. Nietzsche is attacking the moral-philosophical move that smuggles values in under the banner of rational necessity. When people dismiss religion, myth, or instinct as “irrational,” they usually mean “illegitimate.” Nietzsche replies: nice try. The world did not ask for your permission to be messy. If anything, the demand that reality conform to rational standards is the oddity - a psychological craving for control, predictability, and innocence.

Context matters: late 19th-century Europe is drunk on science, progress, and system-building philosophy, while Nietzsche is diagnosing a culture sliding into nihilism after the “death of God.” He’s warning that debunking irrational structures doesn’t delete them; it just drives them underground, where they return as politics, mass movements, moral panics. The sting is that rationalism, too, has its irrational core: a faith in reason as salvation. Nietzsche’s wager is that honesty begins where our justifications fail.

Quote Details

TopicReason & Logic
Source
Unverified source: Human, All-Too-Human (Part II: The Wanderer and His Shadow) (Friedrich Nietzsche, 1880)
Text match: 72.63%   Provider: Cross-Reference
Evidence:
That something is irrational is no argument against its existence, but rather a condition for it. (Aphorism 515 (in the section commonly titled “Man Alone by Himself” / “Der Mensch mit sich allein”)). The wording you supplied (“The irrationality of a thing…”) appears to be a very close variant of...
Other candidates (1)
The Law and Economics of Irrational Behavior (Francesco Parisi, Vernon L. Smith, 2005) compilation95.0%
Francesco Parisi, Vernon L. Smith. Francesco Parisi and Vernon Smith Friedrich Nietzsche ( 1878 ) once wrote , “ The ...
Cite

Citation Formats

APA Style (7th ed.)
Nietzsche, Friedrich. (2026, February 18). The irrationality of a thing is no argument against its existence, rather a condition of it. FixQuotes. https://fixquotes.com/quotes/the-irrationality-of-a-thing-is-no-argument-293/

Chicago Style
Nietzsche, Friedrich. "The irrationality of a thing is no argument against its existence, rather a condition of it." FixQuotes. February 18, 2026. https://fixquotes.com/quotes/the-irrationality-of-a-thing-is-no-argument-293/.

MLA Style (9th ed.)
"The irrationality of a thing is no argument against its existence, rather a condition of it." FixQuotes, 18 Feb. 2026, https://fixquotes.com/quotes/the-irrationality-of-a-thing-is-no-argument-293/. Accessed 19 Feb. 2026.

More Quotes by Friedrich Add to List
Irrationality: A Vital Condition of Existence - Nietzsche
Click to enlarge Portrait | Landscape

About the Author

Friedrich Nietzsche

Friedrich Nietzsche (October 15, 1844 - August 25, 1900) was a Philosopher from Germany.

185 more quotes available

View Profile

Similar Quotes

Friedrich Nietzsche, Philosopher
Friedrich Nietzsche