Feb 22. Sarah, wife of Shabbetai Tsvi Orphaned by the Eastern European pogroms of 1649-49, the volatile Sarah became the spouse of the infamous messianic pretender. Feb 29. Hillel Ba’al Shem A mysterious figure of the late 17th and early 18th centuries whose recently discovered work sheds light on the world of popular culture from…

“Nicholas Copernicus’ book “On the Revolution of the Earth Around the Sun” should be suspended…and that all similar works which contain these teachings should be prohibited.” (Bishop of Albano, March 1616) “Nicholas Copernicus, a scholar of genius…in this domain man is completely at liberty to discover the theory which seems to him to be most…

Battling unseasonably frigid temperatures, Alexander heroically completed his fourth full marathon in Miami today! A tremendous achievement! Most importantly, with your support he surpassed his fundraising target, bringing in a total of $3,299 for Friendship Circle, helping children with autism and other disorders! Congratulations to Alexander, and thank you all for participating!

Hello fellow students of Jewish history! Today our exploration of Jewish heritage along the Danube River valley begins in Budapest, home to one of the largest concentrations of Jews at the turn of the 20th century. I’m really thrilled to be together with so many people who share my passion for the amazing story of…

This article appeared, in slightly abbreviated form, in today’s Forward. So many colleagues and friends–fellow students of the Rebbe–contributed moving quotations on the Facebook page dedicated to the Rebbe. Laura Adkins’ editorship at the Forward is really great, and the final version is certainly more appropriate for the wider audience. If you would like to…

The Jews of the Danube Fall 2018 Lecture Series Lectures in Europe: October 2018 Lectures in Brooklyn: November-December 2018 From its headwaters in Germany’s Black Forest to its final destination in the Black Sea, the Danube River flows through ten countries and over ten centuries of Jewish history. Great cities like Vienna and Budapest punctuate…

Hello friends and colleagues: Thank you for your consistent support and enthusiasm. I am delighted that so many people share my passion for Jewish history and thought, and consider it a rare privilege to share my research with you online and in person. I wish you all a blessed New Year of spiritual and material…

Hello everyone! Please visit this site for my translation of Rabbi Moshe Cordovero’s classic Tomer Devorah (The Kabbalah of Forgiveness), a text often studied at precisely this time of year as we strive to improve our relationships with each other, with G-d, and with ourselves. The site also features a series of brief videos on each…

The Jews of the Danube Fall 2018 Lecture Series From its headwaters in Germany’s Black Forest to its final destination in the Black Sea, the Danube River flows through ten countries and over ten centuries of Jewish history. Great cities like Vienna and Budapest punctuate its course through East-Central Europe, the cradle of much of…

The invisible yet palpable echo of the crypto-Jewish tradition resonates through Portugal like the far side of a conversation faintly overheard in another person’s cell phone. A rush of sibilants or an exclamation of laughter confirms the reality of the distant interlocutor, even though we do not see her before us. The history of Portugal’s…

Join me in this global effort to prepare for Rosh Hashanah and Yom Kippur this year!

Hasidim of the Aish Kodesh should take note: this is likely the face of one of the murderers of Rabbi Kalonymus Kalmish Shapira hy”d. Jakiw Palij, a longtime resident of Queens, New York, was recently extradited to Germany for filing false information while immigrating to the United States after World War II. Palij served as…

Hello students, friends and colleagues– We still have a few hours before the onset of Shabbat and the possible arrival of Mashiach, but if we have to make it through another Tisha B’Av– If you are in Fort Lee, NJ Sunday morning or Crown Heights, Brooklyn Sunday afternoon, please join me for presentations on the…