Marc B. Shapiro – The Seforim Blog

Quiz Answers; Response to Criticism; Rav Schwab Writes to the Rogochover

May 26, 2026 admin Comments 27 comments

Quiz Answers; Response to Criticism; Rav Schwab Writes to the Rogochover Marc B. Shapiro 1. Let me begin with the riddles from my last post here. A. Where do we find that Shammai not only disagrees with Beit Shammai, but also agrees with Beit Hillel? B. In the days of the tannaim a certain item was unquestionably muktzeh. However, in the post-talmudic period, some hold that this item is no longer muktzeh. What item am I referring to? Provide the…

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Saul Lieberman and his Ketubah, Driving on Shabbat, an Unusual Marriage Practice, Girls born on Friday, and More

January 28, 2026 admin Comments 48 comments

Saul Lieberman and his Ketubah, Driving on Shabbat, an Unusual Marriage Practice, Girls born on Friday, and More Marc B. Shapiro For a long time, I have had an interest in Saul Lieberman. It has been almost twenty years since my book Saul Lieberman and the Orthodox appeared.[1] I have also dealt with Lieberman in many Seforim Blog posts. A few years ago, I did a series of eighteen classes on Lieberman on Torah in Motion. You can watch the classes on…

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The Aderet (part 2); Sonya Diskin and R. Yitzhak Yeruham Diskin; Zvi Glatt; and a New Letter from R. Herzog

August 26, 2025 admin Comments 52 comments

The Aderet (part 2); Sonya Diskin and R. Yitzhak Yeruham Diskin; Zvi Glatt; and a New Letter from R. Herzog Marc B. Shapiro Continued from here 1. Regarding R. Kook and the Aderet (R. Eliyahu Rabinowitz-Teomim), we find that R. Kook omitted something that the Aderet wrote. I don’t know if, strictly speaking, we can call this censorship, but R. Kook definitely omitted something that he was not comfortable with. Here is the Aderet speaking about himself in Nefesh David, p….

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R. Moshe Zuriel, the Aderet, Sonya Diskin, and ChatGPT

June 5, 2025 admin Comments 50 comments

R. Moshe Zuriel, the Aderet, Sonya Diskin, and ChatGPT Marc B. Shapiro 1. It is hard to believe that more than a year and a half has passed since R. Moshe Zuriel was taken from us. At the time of his passing, I intended to write a lengthy appreciation of him, but I was never able to get around to it. Still, I feel compelled to say something about R. Zuriel, if only to express my hakarat ha-tov for all that I…

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Two Books by R. Bezalel Naor, R. Meir Simhah of Dvinsk, Michael Lerner, and More

December 16, 2024 admin Comments 58 comments

Two Books by R. Bezalel Naor, R. Meir Simhah of Dvinsk, Michael Lerner, and More by Marc B. Shapiro 1. R. Bezalel Naor is well known for his enormous contributions to what we can call “Rav Kook Studies”. His outstanding translations and analysis have cemented his reputation as one of the leading interpreters of Rav Kook, as well as the most prolific writer on Rav Kook in English. I personally owe a great debt to Naor, as can seen in…

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Neturei Karta; ArtScroll, Arius, and Orangutans; Suicide and the Law of Rodef

September 18, 2024 admin Comments 86 comments

Neturei Karta; ArtScroll, Arius, and Orangutans; Suicide and the Law of Rodef Marc B. Shapiro 1. We have recently seen behavior by so-called religious Jews that is vile. I refer to the actions of Neturei Karta. Of course, we have all seen their antics in the past, but I think most of us looked at them as clowns and sick people that maybe we should feel sorry for. This is no longer the case. Now they are marching in support of…

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Franciscans and More; “Repulsive” Practices; Saul Lieberman, Abraham Joshua Heschel, and R. Jehiel Jacob Weinberg

June 27, 2024 admin Comments 26 comments

Franciscans and More; “Repulsive” Practices; Saul Lieberman, Abraham Joshua Heschel, and R. Jehiel Jacob Weinberg Marc B. Shapiro 1. Following up on what I wrote here and here about the term צעירים (Franciscans) and other expressions used with reference to Catholic religious orders, Brian Schwartz called my attention to a couple of relevant sources. In Milhemet Hovah (Constantinople, 1710), p. 14a, R. David Kimhi mentions a theological argument he had with one of the חכמי הצעירים. In Ginzei Nistarot (1868), vol. 2, p. 10, R. Jacob of Venice in his…

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Abraham Rosenberg, R. Chaim Heller, R. Shlomo Zalman Auerbach on Conversion, Abortion, Mercy Killings, and new pictures and videos of R. Jehiel Jacob Weinberg

May 8, 2024 admin Comments 53 comments

Abraham Rosenberg, R. Chaim Heller, R. Shlomo Zalman Auerbach on Conversion, Abortion, Mercy Killings, and new pictures and videos of R. Jehiel Jacob Weinberg Marc B. Shapiro 1. In my post here I discussed the enigmatic plagiarizer Abraham Rosenberg. As we saw, in 1923 and 1924 Rosenberg published articles on the Jerusalem Talmud in the Orthodox journal Jeschurun, and he later published Al Devar Tikunei Nushaot bi-Yerushalmi. In this last work, Rosenberg refers to R. Chaim Heller as his friend. I and so many…

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Comments on recent books by R. Benji Levy and R. Eitam Henkin; R. Joseph B. Soloveitchik; and the first color photographs of R. Jehiel Jacob Weinberg.

October 23, 2023 admin Comments 53 comments

Comments on recent books by R. Benji Levy and R. Eitam Henkin; R. Joseph B. Soloveitchik; and the first color photographs of R. Jehiel Jacob Weinberg Marc B. Shapiro 1. Benji Levy, Covenant and the Jewish Conversion Question: Extending the Thought of Rabbi Joseph B. Soloveitchik (Cham, Switzerland, 2021) The last few decades have seen a lot of discussion regarding conversion, and what is and is not required before someone is accepted into the Jewish community. This is obviously a halakhic matter,…

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Final Response

May 11, 2023 admin

Final Response By Marc B. Shapiro In response to Rabbi Herschel Grossman’s strong criticisms of my Limits of Orthodox Theology, I wrote four responses on the Seforim Blog. You can view them here, here, here, and here. I then stopped responding even though there are still many criticisms I could have commented on. Readers can compare Grossman’s arguments with my replies and draw their own judgment. Grossman has recently responded to my posts and offered further criticisms in an article published in Dialogue. See here. I do…

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The Enigma of Abraham Rosenberg, R. Yitzchak Scheiner, Mordecai Kaplan, and Prof. Marvin Fox

November 20, 2022 admin Comments 25 comments

The Enigma of Abraham Rosenberg, R. Yitzchak Scheiner, Mordecai Kaplan, and Prof. Marvin Fox Marc B. Shapiro Abraham Rosenberg made his first appearance during the dispute over Solomon Friedlaender’s forged Yerushalmi Kodashim. He portrayed himself as a student of Friedlaender. Here is the title page of his booklet Aneh Khesil in which he defends Friedlaender from the attacks of his critics. Rosenberg also wrote some other things in defense of Friedlaender, including an article in the Frankfurt Orthodox paper…

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R. Yudel Rosenberg, R. Mordechai Elefant, and Sexual

March 24, 2022 admin

R. Yudel Rosenberg, R. Mordechai Elefant, and Sexual Abuse Marc B. Shapiro 1. Many readers of the Seforim Blog are aware of R. Yudel Rosenberg, the fascinating talmid chacham and posek who for some reason was also drawn to forgeries. Ira Robinson has recently authored a complete biography of Rosenberg, A Kabbalist in Montreal: The Life and Times of Rabbi Yudel Rosenberg. This wonderful book is certainly deserving of a complete review on the Seforim Blog, but here I would…

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Gelatin, Abraham Goldstein, R. Moses Isserles, and More, Part 2

December 27, 2021 admin Comments 68 comments

Gelatin, Abraham Goldstein, R. Moses Isserles, and More Marc B. Shapiro Continued from here Among the matters I discussed in the previous post were gelatin and consumption of the human body as part of a medical cure. Believe it or not, consumption of human parts not in the context of medicine is mentioned in a short responsum of R. Joseph Kafih. R. Kafih was asked if it permissible to drink various non-Jewish milk products and also gelatin produced from non-kosher animals….

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Gelatin, Supposed Retractions, and Abraham Goldstein, Part 1

December 1, 2021 admin Comments 55 comments

Gelatin, Supposed Retractions, and Abraham Goldstein, Part 1 Marc B. Shapiro In my last post I quoted something from Mesorat Moshe and wondered whether R. Moshe Feinstein could have actually said that which is attributed to him. While the Mesorat Moshe series is quite valuable, whenever one deals with “table talk” there is always going to be the issue of how much authority do you give to such reports, especially compared with written texts of R. Moshe. Here is an example of what I…

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Which Direction is North?, Geographical Mistakes, and our Woke Universities

August 12, 2021 admin Comments 41 comments

Which Direction is North?, Geographical Mistakes, and our Woke Universities Marc B. Shapiro 1. Numbers 34:15 states: “Two and a half tribes have taken their inheritance on the side of the Jordan by Jericho, to the front, eastward.” Rashi comments: קדמה מזרחה: אל פני העולם שהם במזרח, שרוח מזרחית קרויה פנים ומערביות קרויה אחור לפיכך דרום לימין וצפון לשמאל This passage is translated as follows in ArtScroll’s Sapirstein edition: To the Front, Eastward: This means to the front of the world, which…

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