The Talmud. A published source records them saying or writing it.
SourceMishnah, Pirkei Avot 3:9 (R. Hanina ben Dosa)
Evidence: sefaria.org · How we check
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“Everyone whose deeds are more than his wisdom, his wisdom endures; and everyone whose wisdom is more than his deeds, his wisdom does not endure.”
כָּל שֶׁמַּעֲשָׂיו מְרֻבִּין מֵחָכְמָתוֹ, חָכְמָתוֹ מִתְקַיֶּמֶת. וְכָל שֶׁחָכְמָתוֹ מְרֻבָּה מִמַּעֲשָׂיו, אֵין חָכְמָתוֹ מִתְקַיֶּמֶת
Text: Torat Emet via Sefaria (public domain)
The Talmud (n.d.). Everyone whose deeds are more than his wisdom, his wisdom endures; and everyone whose wisdom is more than his deeds, his wisdom does not endure. [Quotation]. Famous Quotations Network. Retrieved October 24, 2026, from https://www.famous-quotations.com/quotes/13117-everyone-whose-deeds-are-more-than-his-wisdom/
The Talmud. “Everyone whose deeds are more than his wisdom, his wisdom endures; and everyone whose wisdom is more than his deeds, his wisdom does not endure.” Famous Quotations Network, https://www.famous-quotations.com/quotes/13117-everyone-whose-deeds-are-more-than-his-wisdom/. Accessed 24 Oct. 2026.
The Talmud. “Everyone whose deeds are more than his wisdom, his wisdom endures; and everyone whose wisdom is more than his deeds, his wisdom does not endure.” Famous Quotations Network. Accessed October 24, 2026. https://www.famous-quotations.com/quotes/13117-everyone-whose-deeds-are-more-than-his-wisdom/.