James Luther Adams
From the Unitarian Universalist Historical Society Dictionary of Unitarian and Universalist Biography:
James Luther Adams (November 12, 1901-July 26, 1994) was a Unitarian parish minister, social activist, journal editor, prolific author, and for more than 40 years a divinity school professor. A distinguished scholar, he translated and edited the works of major German theologians. Adams was the most influential theologian among 20th-century Unitarian Universalists and one of the finest 20th-century American liberal Christian theologians.