Isaac Baer Levinsohn

Isaac Baer Levinsohn, also known as the Ribal (ריב״ל), was a Jewish scholar of Hebrew, a satirist, a writer and Haskalah leader. He has been called "the Mendelssohn of Russia." In his Bet Yehudah (1837), he formulated a philosophy and described Jewish contributions to civilization in an effort to improve Jewish-Christian relations.