Joseph Rosen

One of the greatest and most original Jewish minds of the last few generations, he was connected to Chabad Chassidut throughout his life. Nevertheless, he also studied under Rabbi Chaim Soloveitchik in Slutzk. Hence he was universally accepted and answered a large quantity of responsa well beyond his responsibilities as the rabbi of the chassidic community of Dvinsk. His most famous work was his Tzafnat Paneach commentary on Rambam's Mishneh Torah.