“There is frequently more to be learned from the unexpected questions of a child than the discourses of men.”
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John Locke 144
English philosopher and physician 1632–1704Related quotes

“A wise man can learn more from a foolish question than a fool can learn from a wise answer.”

“Men more frequently require to be reminded than informed.”
No. 2 (24 March 1750) http://etext.lib.virginia.edu/etcbin/toccer-new2?id=Joh1Ram.sgm&images=images/modeng&data=/texts/english/modeng/parsed&tag=public&part=2&division=div1
Source: The Rambler (1750–1752)

“Wise men learn more from fools than fools from the wise.”
Plutarch's Life of Cato
Variant: Wise men profit more from fools than fools from wise men; for the wise men shun the mistakes of fools, but fools do not imitate the successes of the wise.

Book V, Chapter 1.
Books, Coningsby (1844), Vivian Grey (1826)
Source: The Chronicles of Prydain (1964–1968), Book I: The Book of Three (1964), Chapter 1
Context: "Why?" Dallben interrupted. "In some cases," he said, "we learn more by looking for the answer to a question and not finding it than we do from learning the answer itself."

De Colores Means All of Us: Latina Views for a Multi-Colored Century (2017)
Language Education in a Knowledge Context (1980)
Context: In the development of intelligence nothing can be more "basic" than learning how to ask productive questions. Many years ago, in Teaching as a Subversive Activity, Charles Weingartner and I expressed our astonishment at the neglect shown in school toward this language art.... The "back to the basics" philosophers rarely mention it, and practicing teachers usually do not find room for it in their curriculums. …all our knowledge results from questions, which is another way of saying that question-asking is our most important intellectual tool… There are at present no reading tests anywhere that measure the ability of students to address probing questions to the particular texts they are reading... What students need to know are the rules of discourse which comprise the subject, and among the most central of such rules are those which govern what is and what is not a legitimate question.