Really looking forward to meeting this community!

Lectures in Jewish History and Thought. No hard questions, please.




After a brief overview placing the medieval period in historical context, we look more deeply at two especially noxious false charges: the Blood Libel and Desecration of the Host.

A look at the role of Jews in the medieval European economy, with emphasis on trade and finance. Premiering today at 1pm ET (New York Time) with live chat.

Please join us this Sunday for an outdoor gathering honoring our community’s heroic kidney donors.

After a discussion of Jewish communal structure in the medieval era, we will look at the devastation of the First Crusade and the Rhineland Massacres of 1096, follow up with some thoughts on the long-term impact on Ashkenazi Culture. Premiering today at 1 pm.
Yikes! This interview started out with a lot more personal material than I intended, but I had a lot of fun speaking with my colleague and friend Dr. Michael Chighel, Dean of Ashkenazium Jewish History MA in Budapest. Enjoy in good health!

Here’s the latest videos from the Jewish History Lab series.

Brief review of the troubled journey of Rabbi Moshe Hayim Luzzatto, a brilliant young scholar of the 18th century who was persecuted by opponents and hounded across Europe before finding his way to the more tolerant intellectual climate of Amsterdam.

//embed.chabad.org/multimedia/mediaplayer/embedded/embed.js.asp?aid=5035317&width=auto&height=auto&HideVideoInfo=false “Truth will Sprout from the Earth: Gutenberg, the Internet, and the New Uncertainty Principle.” Presentation at the XIII International Torah and Science Conference, Miami. Introductory remarks by Dr. Nathan Katz.

Runaway Yeshiva Bochur’s Work May Aid COVID Research The Jewish Star (March 24, 2021) Shortly after emigrating to Israel in 1901, this Telz-educated orphaned son of a rosh yeshiva earned an unlikely nickname: “the crazy fly-catcher.” Israel Aharoni’s odyssey into the world of middle eastern zoology, long recognized in the scientific world with over 30……

Really thrilled to be part of the inaugural visiting faculty of the Ashkenazium! Please check out this introductory video that beautifully captures the historic “vibe” of the school and its Dean, Dr. Michael Chigel.

A brief overview of the history of Jewish life in Egypt. After looking briefly at the Exodus itself, we look at some major population centers in Elephantine, Alexandria, and Cairo, to the present day. To avoid any possible confusion: this lecture does not argue for continuity between the Jewish population described in the account of……

A brief look at the social and economic background of the post-Talmudic era in Baghdad, with an important digression into the 8th-10th century revolution in information technology that helped propel the authority and influence of the Geonim. The following video will look at the early history of North Africa, an area influenced by their scholarship……


I’m really thrilled to be cruising the Douro River this summer with Kosher Riverboat Cruises, lecturing on the history of Spanish and Portuguese Jewry (my wife plans to come along, which means I really have to bring my A-game). I just learned that there’s only 18 cabins left, so if you’re interested, please click the……

Conference presentation at the “The 100th Anniversary of the Ukrainian Revolution and the Proclamation of Ukraine’s Independence,” held at the Ukrainian Institute, New York, Sunday, January 21. My talk was inspired by a thought-provoking article in the Forward by Avital Chizik-Goldschmidt. A fascinating panel, which included Anna Procyk of CUNY, Serhy Yekelchyk of University of……

On Parashat Beshalah (January 20, 1940), a young rebel escaped from the notorious Pawiak Prison, located not far from the Piaseczno Bet Midrash. Andrzej Kott, the 21-year old leader of the military wing of a resistance movement called the Polish People’s Independence Action, was a child of assimilated Jewish parents who had converted to Christianity….…

The recent translation of the work of Rabbi Shimon Gershon Rosenberg (Rav Shagar, 1949-2007) promises to elevate his distinctive thought to a broader audience of readers (Faith Shattered and Restored: Judaism in the Postmodern Age), many of whom will resonate with Dr. Yitzchak Mandelbaum’s comment on his discovery of Rav Shagar: “I knew I had……

The Rebbe’s entry for Parashat Bo (January 13, 1940) is unusual. Recorded in the scribe’s careful hand, with minimal annotation, it has two bold diagonal lines drawn through the center of the text, indicating that the Rebbe rejected it altogether. A brief and uncharacteristic first-person comment is appended: “more of what we said I do……

Really nice to meet with Jésica Neuah of Editorial Perspectivas to work on the tentative cover and book design of the Spanish edition of The Kabbalah of Forgiveness! Great to work with her and the whole team. G-d willing the book will be released in the summer of this year.

I had chills listening to Rabbi Shlomo Katz review the Rebbe’s words on this week’s parashah. I am grateful for his kind words of praise for my recent book on the historical context of the Aish Kodesh, but to tell the truth, I hardly recognized my own words from the masterful treatment they received from……

Chaim Kaplan recorded the mood in the Warsaw Ghetto in January 1942: The cold is so intense that my fingers are often too numb to hold a pen. There is no coal for heating and electricity is sporadic or nonexistent. In the oppressive dark and unbearable cold your mind stops functioning. Yet even in such……

Five months into the Nazi occupation, the Jews of Warsaw struggled to keep up with the barrage of administrative decrees inflicted upon them by the Germans. When the Rebbe spoke on Parashat Vaera, which fell on January 6, 1940, the worst was still far off. The Nazis had replaced the leadership of the Jewish Council……

The winter of 5702 brutalized the Jews of the Warsaw ghetto with unforgiving cold. Chaim Kaplan, a school principal whose journal Scroll of Agony survived the war, recounts in his typically blunt prose how the physical privations of January 1942 affected the spiritual life of Ghetto inhabitants: Gone is the spirit of Jewish brotherhood. The……

The Sephardic Diaspora Spring 2018 Lecture Series Monday Nights @ 7:00 pm Main Auditorium, Touro College, 1602 Avenue J Brooklyn NY 11230 (718) 535-9333 Free and Open to the Public No hard questions, please. Image: Eleanora of Toledo, student of Benvenida Abravanel February 5: Who Was Benvenida Abravanel? February 12 :Who Was Samuel Usque? (No Class Feb……

On December 27, 1941, the Piaseczno Rebbe delivered his last recorded drashah on Parashat Vayigash in the Warsaw Ghetto. The previous month was especially brutal: an especially cold winter, combined with a severe coal shortage, exacerbated the typhus epidemic, and each morning a detail of the chevra kadisha patrolled the streets to collect the bodies……


