Mordecai Kaplan

Mordecai Menahem Kaplan (1881–1983) was an American rabbi, educator, and theologian who revolutionized Jewish religious thought by founding Reconstructionist Judaism, a major movement that challenged orthodox interpretations. Born in Lithuania and educated in America, Kaplan served as a rabbi and professor at the Jewish Theological Seminary for much of his career. He developed a philosophy that viewed Judaism not merely as a religion but as an evolving civilization encompassing culture, language, and ethics. His groundbreaking work, particularly "Judaism as a Civilization" (1934), argued for Judaism's continued relevance in modern secular society by reinterpreting rituals and beliefs through contemporary philosophical frameworks. Kaplan's influence extended far beyond religious circles, impacting how Jewish identity is understood and practiced globally. His ideas promoted Jewish peoplehood and cultural continuity while embracing scientific and progressive thought, making him one of the most influential Jewish thinkers of the twentieth century.