Hebrew scholar, writer, and historian. As a youth of 15 in Odessa, Russia, Klausner dedicated himself to the task of modernizing Hebrew. He published books in Hebrew on a variety of subjects: literature, philosophy, philology, history, and Asian studies. He was editor of Ha-Shiloah, one of the finest Hebrew publications for more than 20 years, and served as professor of modern Hebrew literature at the Hebrew University in Jerusalem since its establishment in 1925. Klausner was chief editor of a Hebrew Encyclopedia. His two studies on the rise of Christianity, Jesus of Nazareth and From Jesus to Paul, are available in English.