Context
How a recovery meditation became a Churchillism
The line was written for a very specific reader. Hazelden is the publisher attached to the Minnesota model of addiction treatment, and The Reflecting Pond is a book of short meditations for people doing aftercare — one subject per chapter, no heroics. Read in that setting, the sentence is not a leadership aphorism at all: it is reassurance that you do not need to be strong or clever to get better, only to keep going.
Detached from the book, it reads like a maxim, and a maxim wants a famous mouth. Two things helped it find one. In 1986 a quotation compendium reprinted the line two words shorter and misspelled the author as “Cardes” — and Quote Investigator notes that Cordes and Churchill sit close together in an alphabetical list of sources ↗, a known mechanism for this kind of slippage. And the sentiment is pure Churchillian archetype: endurance, stubbornness, keeping on. By 2001 a newspaper was printing it over his name, and by 2004 it was in a Donald Trump business book as Churchill’s.
A meditation written for people in recovery became a boardroom Churchillism.
Two wordings, and which one is the original
The version Cordes published in 1981 is the longer one: “Continuous effort — not strength or intelligence — is the key to unlocking and using our potential.” The version that circulates today, on posters and quote sites and in Churchill’s name, is the trimmed one that first appeared in a 1986 compilation, with “and using” removed.
So the popular Churchill quotation is doubly wrong: wrong author, and not even the author’s own sentence. Richard Langworth records the trimmed form as “No attribution,” reported in Investor’s Business Daily in August 2008 ↗.