a Jewish one. He believed that no religious community could claim a monopoly on religious truth. For these and other reasons, Martin Luther King Jr. called Heschel "a truly great prophet." Heschel actively participated in the Civil Rights movement, and was a participant in the third Selma to Montgomery march, accompanying Dr. King and John Lewis. Published works The Earth Is the Lord's: The Inner World of the Jew in Eastern Europe. 1949. Man Is Not Alone: A Philosophy of Religion. 1951. The Sabbath: Its Meaning for Modern Man. 1951. Man's Quest for God: Studies in Prayer and Symbolism. 1954. God in Search of Man: A Philosophy of Judaism. 1955. The Prophets. 1962. Who Is Man? 1965. Israel: An Echo of Eternity. 1969. A Passion for Truth. 1973. I asked for Wonder: A spiritual anthology. 1983. Heavenly Torah: As Refracted Through the Generations. 2005. ; Theology of Ancient Judaism. [Hebrew]. 2 vols. London: Soncino Press, 1962. Third volume, New York: Jewish Theological Seminary, 1995. The Ineffable Name of God: Man: Poems. 2004. . [Yiddish]. 2 v. (694 p.) Tel-Aviv: ha-Menorah, 1973. Added t.p.: Kotzk: the struggle for integrity (A Hebrew translation of vol. 1, Jerusalem: Magid, 2015). (). 45 p. Originally published: New-York: Shoken, 1946. Man Is Not Alone (1951) Man Is Not Alone: A Philosophy of Religion offers Heschel's views on how people can comprehend God. Judaism views God as being radically different from humans, so Heschel explores the ways that Judaism teaches that a person may have an encounter with the ineffable. A recurring theme in this work is the radical amazement that people feel when experiencing the presence of the Divine. Heschel then goes on to explore the problems of doubts and faith; what Judaism means by teaching that God is one; the essence of humanity and the problem of human needs; the definition of religion in general and of Judaism in particular; and human yearning for spirituality. He offers his views as to Judaism being a pattern for life. The Sabbath (1951) The Sabbath: Its Meaning for Modern Man is a work on the nature and celebration of Shabbat, the Jewish Sabbath. It is rooted in the thesis that Judaism is a religion of time, not space, and that the Sabbath symbolizes the sanctification of time. Heschel wrote that "Technical civilization is man's conquest of space. It is a triumph frequently achieved by sacrificing an essential