R. Isaiah b. Judah Loeb Berlin (1725–1799), rabbi and author. Berlin was known also as Isaiah Pick after his father-in-law, Wolf Pick of Breslau, who supported him for many years. He was born in Eisenstadt, Hungary, but his father, an eminent talmudic scholar (who later became rabbi of Pressburg), moved to Berlin where the young Berlin studied under him. Later he studied under R. Zevi Hirsch Bialeh (Harif), the rabbi of Halberstadt, at the latter's yeshivah. In 1755 Berlin moved to Breslau where he engaged in business. In 1793, when already advanced in years, he was elected to a rabbinical post, being appointed to succeed R. Isaac Joseph Te'omim as rabbi of Breslau. According to hasidic sources, R. Berlin was sympathetically disposed toward that movement and extended a friendly welcome to one of its emissaries, R. Jacob Samson of Spitsevka. R. Berlin was renowned for his conciliatory attitude and for his avoidance of all disputes. Characteristically, he called a work She'elat Shalom ("A Greeting of Peace"), for "all my life I have been careful not to treat my fellow men with disrespect, even to the extent of not slighting them by faint praises." Berlin corresponded on halakhic subjects with his brother-in-law R. Joseph Steinhardt, R. Ezekiel Landau of Prague, R. Eleazar b. Eleazar Kallir, and R. Ephraim Zalman Margolioth of Brody, among others.

עם הקדמת המוציא לאור הראשון. הסכמת רבני ווילנא: ר' אברהם אבלי ב"ר אברהם שלמה [פאסוואלער], ר' יוסף ב"ר שמעון [יעקעס] ור' ישראל ב"ר אליעזר [גינצבורג], א דראש חודש אייר תקצ"ו.