sentences:  He received a traditional education at home and traditional Jewish schooling (Hebrew language and Bible study) in a "cheder".He studied law, philosophy and history at Lviv University.He accidentally encountered materials on the history of Jews in Kraków, and on the request of the Kraków Jewish kahal, he wrote the first volume of "The History of Jews in Cracow and Kazimiria 1304-1655" (Kraków, 1912).