Discover what others are learning
Curated Torah sources across every topic, from classical texts to contemporary responsa.
Jewish Identity and Genealogical Verification
Jewish law establishes that religious and legal status is determined through halachic categories, reliable testimony, and documented lineage—not physical characteristics or appearance. Sources span from biblical precedent through medieval and modern codification, consistently rejecting any biological or phenotypic basis for determining Jewish identity.
לא יכלו להגיד בית אבותם וזרעם אם מישראל הם
Can Artificial Intelligence Serve as a Posek?
These sources explore the essential qualifications and nature of halakhic authority in Jewish law. They establish that a posek must be a living human being grounded in an unbroken chain of transmission, possess personal moral responsibility, and engage in authentic spiritual reasoning—qualities that challenge whether an artificial system could issue binding halakhic rulings.
לא בשמים היא
Cherem D'Rabbenu Gershom and Jewish Copyright Law
Sources explore the halachic foundations for protecting intellectual property and authorial rights in Jewish law, drawing on biblical prohibitions against theft and boundary encroachment, rabbinic precedents for communal bans, and the specific application of Cherem d'Rabbenu Gershom to copyright protection for authors and printers.
כופין בני מבוי זה את זה שלא להושיב ביניהם
Intellectual Property and the Laws of Theft
These sources establish the halakhic foundations for protecting intellectual and creative property from unauthorized appropriation. Drawing on biblical prohibitions against theft and taking what belongs to another, rabbinic authorities extend these principles to cover intangible forms of misappropriation, including unauthorized copying of manuscripts and written works.
יְהִי מָמוֹן חֲבֵרְךָ חָבִיב עָלֶיךָ כְּשֶׁלָּךָ
The Biblical Prohibition of Gezel
Sources establish gezel (forcible taking of another's property) as a foundational biblical prohibition distinct from theft, appearing in the Decalogue and enumerated among the Noahide laws. The sources trace its development from Torah through Talmudic case law and medieval codification, exploring its scope, severity, and role in maintaining justice.
אָסוּר לִגְנֹב כָּל שֶׁהוּא דִּין תּוֹרָה
Student Rulings Before the Teacher
These sources address the prohibition against a student issuing halachic rulings in the presence of his master, a core principle of rabbinic deference grounded in Talmudic law and codified by the Rishonim. The sources explore the biblical foundations, Talmudic elaborations, and the severity of violating this rule.
אֵיזֶהוּ חוֹלֵק עַל רַבּוֹ
Pikuach Nefesh and Forbidden Materials in Medical Life-Saving
Jewish law addresses whether life-saving medical procedures using ordinarily forbidden substances—such as non-kosher animal organs in transplantation—are permissible under the principle of pikuach nefesh. Sources from Tanakh through the Acharonim establish that preserving life overrides virtually all Torah prohibitions, including dietary laws, when a person faces mortal danger.
וְחַי בָּהֶם וְלֹא שֶׁיָּמוּת בָּהֶם
Bal Tosif and Lo Sasur: Adding and Subtracting from Torah
These twin prohibitions forbid adding new commandments to the Torah or subtracting from existing ones. The sources explore the Biblical foundation of these laws, their application through rabbinic authority, and the crucial distinction between legitimate rabbinic enactments and unauthorized innovations that violate these prohibitions.
לֹא תֹסִפוּ עַל־הַדָּבָר אֲשֶׁר אָנֹכִי מְצַוֶּה אֶתְכֶם
Following the Majority Over Heavenly Signs
These sources establish the fundamental principle that Jewish law is determined by the majority ruling of the sages, not by prophetic voices or miraculous signs. From the Talmudic account of the Oven of Akhnai to Maimonides' codification, they demonstrate that 'the Torah is not in heaven' — halachic authority rests with human judicial process and collective rabbinic consensus.
לֹא בַשָּׁמַיִם הִיא
Marit Ayin: The Appearance of Impropriety
These sources explore marit ayin (the appearance of wrongdoing), a foundational rabbinic principle requiring Jews to avoid actions that might create suspicion of transgression, even when technically permitted. The sources range from Talmudic discussions of idolatry and Shabbat observance to practical rulings on kashrut, grounded in the biblical imperative to be 'clean before God and before Israel.'
כׇּל מָקוֹם שֶׁאָסְרוּ חֲכָמִים מִפְּנֵי מַרְאִית הָעַיִן — אֲפִילּוּ בְּחַדְרֵי חֲדָרִים אָסוּר
Judicial Authority and Authorization in Halakha
This passage explores the requirement that a judge obtain proper authorization before rendering decisions in monetary cases, and examines the distinction between textual learning and true Torah mastery through discipleship under a sage. The sources trace both the Talmudic basis and the Maimonidean codification of judicial appointment, while also addressing R. Elazar's principle that one who studies scripture without serving Torah scholars lacks genuine Torah knowledge.
לישקול רשותא מבי ריש גלותא
Automated Processes Running on Shabbat
Jewish law permits setting certain mechanical or automated processes in motion before Shabbat so long as they operate without direct human intervention on Shabbat itself. The sources explore the boundaries of this permission, examining distinctions between permitted autonomous systems and forbidden forms of labor, with applications to modern technology.
והיא נגמרת מאליה בשבת