"The theory of evolution by cumulative natural selection is the only theory we know of that is in principle capable of explaining the existence of organized complexity"
About this Quote
The key rhetorical move is “in principle capable.” He’s not claiming evolutionary theory has already mapped every pathway from chemistry to consciousness. He’s asserting something more foundational: among proposed explanations, cumulative natural selection is uniquely structured to build improbable order without smuggling in an intelligence that itself would require explanation. “Cumulative” is the quiet dagger. It rejects the straw-man caricature of evolution as a one-shot accident, replacing it with a ratchet: small, non-randomly retained improvements stacked across vast time.
Context matters: Dawkins wrote and spoke in a cultural atmosphere where evolution wasn’t merely a biological theory but a proxy war over authority - scientific, religious, educational. The sentence is calibrated for that battlefield. It carries a subtextual challenge: if you want to compete with this account, don’t offer vibes, metaphors, or reverent gestures toward mystery. Offer a process that can actually generate complexity step by step, without borrowing the very complexity you’re trying to explain.
Quote Details
| Topic | Science |
|---|---|
| Source | Richard Dawkins, The Blind Watchmaker: Why the Evidence of Evolution Reveals a Universe Without Design (1986), opening sentence/intro asserting that evolution by cumulative natural selection uniquely explains organised complexity. |
| Cite |
Citation Formats
APA Style (7th ed.)
Dawkins, Richard. (2026, January 18). The theory of evolution by cumulative natural selection is the only theory we know of that is in principle capable of explaining the existence of organized complexity. FixQuotes. https://fixquotes.com/quotes/the-theory-of-evolution-by-cumulative-natural-1389/
Chicago Style
Dawkins, Richard. "The theory of evolution by cumulative natural selection is the only theory we know of that is in principle capable of explaining the existence of organized complexity." FixQuotes. January 18, 2026. https://fixquotes.com/quotes/the-theory-of-evolution-by-cumulative-natural-1389/.
MLA Style (9th ed.)
"The theory of evolution by cumulative natural selection is the only theory we know of that is in principle capable of explaining the existence of organized complexity." FixQuotes, 18 Jan. 2026, https://fixquotes.com/quotes/the-theory-of-evolution-by-cumulative-natural-1389/. Accessed 12 Feb. 2026.



