45% sureLots of sources credit Thomas Edison with this, and they agree with each other. The book or the speech it first came from hasn't turned up yet.
What turned up
Wikiquote-sourced only to a 1999 posthumous quote compilation (American Greats, ed. Robert A. Wilson & Stanley Marcus, p. 70); no primary interview or work located, held at likely.
Sources checked
en.wikiquote.orgChecked using claude-sonnet-5, 21 August 2026Wikiquote Sourced section (Date unknown), citing American Greats (1999), p. 70.
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