"To keep every cog and wheel is the first precaution of intelligent tinkering"
About this Quote
Aldo Leopold smuggles a radical ethic into the plain talk of a mechanic. “Intelligent tinkering” sounds modest, almost folksy: not revolution, not renunciation, just careful adjustment. Then the line snaps shut on its real demand. The “first precaution” is to keep every “cog and wheel” - every species, every process, every messy little function we’re tempted to write off as expendable. He’s not praising preservation as sentiment; he’s prescribing it as competence.
The metaphor does two things at once. It flatters the human urge to intervene (we are going to tinker) while indicting our habitual arrogance (we don’t know which parts matter). A cog is small, replaceable-looking, easy to misplace. Leopold’s point is that ecosystems are not IKEA furniture; they’re closer to a watch whose workings you can’t fully see, and whose failures appear long after the “improvement” felt successful. The subtext is a warning about irreversible mistakes dressed as progress, especially when economics or convenience pushes us to simplify nature into a few “useful” outputs.
Context matters: Leopold wrote in the early 20th century, when predators were being eradicated, wetlands drained, and land “managed” with industrial confidence. His land ethic emerges as a counter to that era’s faith in control. The sentence is compact because the argument has to be: if you admit ignorance, you inherit responsibility. The precaution isn’t caution for its own sake; it’s humility weaponized into policy.
The metaphor does two things at once. It flatters the human urge to intervene (we are going to tinker) while indicting our habitual arrogance (we don’t know which parts matter). A cog is small, replaceable-looking, easy to misplace. Leopold’s point is that ecosystems are not IKEA furniture; they’re closer to a watch whose workings you can’t fully see, and whose failures appear long after the “improvement” felt successful. The subtext is a warning about irreversible mistakes dressed as progress, especially when economics or convenience pushes us to simplify nature into a few “useful” outputs.
Context matters: Leopold wrote in the early 20th century, when predators were being eradicated, wetlands drained, and land “managed” with industrial confidence. His land ethic emerges as a counter to that era’s faith in control. The sentence is compact because the argument has to be: if you admit ignorance, you inherit responsibility. The precaution isn’t caution for its own sake; it’s humility weaponized into policy.
Quote Details
| Topic | Nature |
|---|---|
| Source | Unverified source: Round River: From the Journals of Aldo Leopold (Aldo Leopold, 1953)
Evidence: Essay "Conservation", pp. 146–147 (varies by edition; often cited as p. 147 in the 1953 OUP 1st ed.). Primary-source location: the sentence appears in Aldo Leopold’s essay titled "Conservation" (written during Leopold’s lifetime; published posthumously). The earliest identified publication is the... Other candidates (2) Aldo Leopold (Aldo Leopold) compilation98.8% ngly useless parts to keep every cog and wheel is the first precaution of intelligent tinkering Ecology and Ecosystem Conservation (Oswald J. Schmitz, 2013) compilation95.0% ... Aldo Leopold ( 1953 ) had a different take on this same issue : The The outstanding scientific discovery of the .... |
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