"The only ways of enquiry that lead to knowledge... the one way assuming that being is and that it is impossible for it not to be, is the trustworthy path, for truth attends it"
About this Quote
The intent is polemical. Parmenides is intervening in an early Greek scene obsessed with nature’s flux - weather, fire, rivers, bodies - and with thinkers like Heraclitus who made change the headline. His move is to treat contradiction as the ultimate taboo: “it is impossible for it not to be.” That isn’t just logic; it’s a disciplinary rule for thought. If you allow “what is not” into your explanations, you’ve already left the “trustworthy path,” because you’ve made room for nothingness to do work.
The subtext is powerfully anti-empirical. Sense perception reports becoming: things appear, alter, decay. Parmenides implies that this testimony is intellectually unserious, because it relies on what can fail to be. Truth, in his framing, “attends” only what cannot collapse into its opposite. That’s why the rhetoric is so absolute: he’s not describing the world as much as specifying the terms under which “knowledge” is even allowed to exist.
Contextually, it’s a founding gesture for Western metaphysics: elevating necessity over appearance, stability over experience, and making reason the court that overrules the eyes.
Quote Details
| Topic | Truth |
|---|---|
| Source | Parmenides, On Nature (fragment, the 'Way of Truth') — standard translations render the passage as asserting that 'being is' and 'it cannot not be'; see Stanford Encyclopedia of Philosophy entry 'Parmenides' for text and commentary. |
| Cite |
Citation Formats
APA Style (7th ed.)
Parmedides. (2026, January 15). The only ways of enquiry that lead to knowledge... the one way assuming that being is and that it is impossible for it not to be, is the trustworthy path, for truth attends it. FixQuotes. https://fixquotes.com/quotes/the-only-ways-of-enquiry-that-lead-to-knowledge-89588/
Chicago Style
Parmedides. "The only ways of enquiry that lead to knowledge... the one way assuming that being is and that it is impossible for it not to be, is the trustworthy path, for truth attends it." FixQuotes. January 15, 2026. https://fixquotes.com/quotes/the-only-ways-of-enquiry-that-lead-to-knowledge-89588/.
MLA Style (9th ed.)
"The only ways of enquiry that lead to knowledge... the one way assuming that being is and that it is impossible for it not to be, is the trustworthy path, for truth attends it." FixQuotes, 15 Jan. 2026, https://fixquotes.com/quotes/the-only-ways-of-enquiry-that-lead-to-knowledge-89588/. Accessed 12 Feb. 2026.











