Halachaהלכה

Plagiarism and Intellectual Theft in Jewish Law

Jewish legal and ethical sources address plagiarism and the improper appropriation of others' intellectual work. The sources examine theft prohibitions, the obligation to attribute ideas properly, and the fundamental value of truth and integrity in Torah scholarship.

אֵינוֹ שָׂמֵחַ בְּהוֹרָאָה וְלֹא מֵגִיס לִבּוֹ

4 sources · all verified

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What the sources say

The most fundamental grounding is that the Shulchan Arukh (Choshen Mishpat 348) rules that it is forbidden to steal even the smallest amount under Torah law, whether the thief intends to return the item, to pay double, or to cause distress — the prohibition applies in every form so that one does not habituate oneself to the act.

Alongside the prohibition on taking what belongs to another, Pirkei Avot 6:6 counts among the qualities of a Torah scholar the practice of reporting a teaching in the name of its original author, and draws the sweeping conclusion that whoever says something in the name of the one who said it brings redemption to the world, as proven by the verse about Esther attributing her report to Mordechai.

The Maharal (Netivot Olam, Netiv Haemet 1) reinforces that even the slightest deviation from truth is itself falsehood, for the moment a word departs even partially from what is true, it becomes a lie — which has no enduring existence — so presenting another's words as one's own fails not only as theft but as a violation of truth at its root.

Source 1 · Tanach
Verified

Proverbs 22:28

משלי כ״ב:כ״ח

Proverbs 22:28

"Do not move an ancient boundary marker set up by your ancestors" — classical biblical prohibition interpreted by the rabbis as encompassing the theft of another's intellectual or scholarly territory, not merely physical land.

אַל־תַּ֭סֵּג גְּב֣וּל עוֹלָ֑ם אֲשֶׁ֖ר עָשׂ֣וּ אֲבוֹתֶֽיךָ׃

Do not remove the ancient boundary stone That your ancestors set up.

Source 2 · Chazal
Verified

Pirkei Avot 6:6

משנה אבות ו׳:ו׳

Pirkei Avot 6:6

Among the 48 qualities by which Torah is acquired is "one who quotes a statement in the name of the person who said it" — framing proper attribution as a fundamental Torah value and implying plagiarism violates the very spirit of Torah scholarship.

וְלֹא מֵגִיס לִבּוֹ בְתַלְמוּדוֹ, וְאֵינוֹ שָׂמֵחַ בְּהוֹרָאָה, נוֹשֵׂא בְעֹל עִם חֲבֵרוֹ, מַכְרִיעוֹ לְכַף זְכוּת, מַעֲמִידוֹ עַל הָאֱמֶת, וּמַעֲמִידוֹ עַל הַשָּׁלוֹם, מִתְיַשֵּׁב לִבּוֹ בְתַלְמוּדוֹ, שׁוֹאֵל וּמֵשִׁיב, שׁוֹמֵעַ וּמוֹסִיף, הַלּוֹמֵד עַל מְנָת לְלַמֵּד וְהַלּוֹמֵד עַל מְנָת לַעֲשׂוֹת, הַמַּחְכִּים אֶת רַבּוֹ, וְהַמְכַוֵּן אֶת שְׁמוּעָתוֹ, וְהָאוֹמֵר דָּבָר בְּשֵׁם אוֹמְרוֹ הָא לָמַדְתָּ שֶׁכָּל הָאוֹמֵר דָּבָר בְּשֵׁם אוֹמְרוֹ מֵבִיא גְאֻלָּה לָעוֹלָם, שֶׁנֶּאֱמַר (אסתר ב) וַתֹּאמֶר אֶסְתֵּר לַמֶּלֶךְ בְּשֵׁם מָרְדֳּכָי:

See also

  • Niddah 70bunverifiedFiled under: Torah Study: The Foundation of Jewish Life
  • Pirkei Avot 5:23unverifiedFiled under: Torah Study: The Foundation of Jewish Life
  • Rashi on Mishlei 9:1unverifiedFiled under: Torah Study: The Foundation of Jewish Life
Source 3 · Acharonim
Verified

Shulchan Arukh, Choshen Mishpat 348

שולחן ערוך, חושן משפט שמ״ח

Shulchan Arukh, Choshen Mishpat 348

Theft of any amount is Torah-prohibited, whether done in jest, even with intent to return the item, to pay double restitution, or to cause distress; one who steals even a minimal value violates the prohibition "thou shalt not steal" and must pay restitution, whether the theft is from an Israelite or non-Jew and whether from an adult or minor.

אסור לגנוב אפי' כל שהוא דין תורה ואסור לגנוב אפי' דרך שחוק ואפי' ע"מ להחזיר או כדי לשלם תשלומי כפל או כדי לצערו הכל אסור כדי שלא ירגיל עצמו בכך: כל הגונב אפי' שוה פרוטה עובר על לאו דלא תגנובו וחייב לשלם אחד הגונב ממון ישראל או הגונב ממון של עכו"ם ואחד הגונב מגדול או מקטן:

Source 4 · Acharonim
Verified

Maharal, Netivot Olam — Netiv HaEmet 1

נתיבות עולם, נתיב האמת א׳

Netivot Olam, Netiv Haemet 1

A king speaks of truth's inherent power: truth remains standing even when all oppose it with force, while falsehood has no permanence and breaks apart like waves, with even the smallest deviation from truth—such as removing a single letter from the word "emet" (truth) to make "met" (death)—constituting a lie that destroys the thing entirely, so one cannot claim that a mostly-true statement counts as truth, because truth requires complete integrity or it ceases to exist.

שלמה המלך בא לדבר על מדת האמתית ועל מעלת האמת, כי כאשר האדם דבריו באמת ויושר, אף אם יבאו הכל לחלוק עליו ולבטל האמת ובכח נלחמים עמו עם כל זה האמת נשאר במקומו. והפך זה לשון שקר אין קיום לשקר, וזה שאמר ועד ארגיעה לשון שקר, כלו' השעור היותר קטן שאפשר לומר עליו דהיינו עד יום או חצי יום, ארגיע לשון שקר לשון שבירה כמו רוגע הים וגליו שישבור לשון שקר וכן הרבה, וכך פי' הכתוב ועד ארגיעה לשון שקר הזמן היותר קטן שאפשר לומר עליו עד כך וכך שהוא קצר מאד יהיה נשבר לשון שקר. ואל יאמר האדם כי אף אם משקר מעט הלא הרוב הוא האמת, שאין הדבר כך כלל רק כאשר סר דבר מעט מן האמת הוא שקר, ולכך אם תסיר האל"ף מן אמת אף שהא' הוא אחד בלבד נעשה ממנו מת הפך האמת, כי האמת הוא מקוים כמו שיתבאר בסמוך גבי אתרא דשמיה קושטא ומיד שהוסר דבר מן אמת אין קיום לדבר ההוא והוא מת.

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