Frank Charles Laubach (September 2, 1884 – June 11, 1970), from Benton, Pennsylvania was a Congregational Christian missionary educated at Union Theological Seminary and Columbia University, and a mystic known as "The Apostle to the Illiterates." In 1915 (see Laubach, Thirty Years With the Silent Billion), while working among Muslims at a remote location in the Philippines, he developed the "Each One Teach One" literacy program. It has been used to teach about 60 million people to read in their own language. He was deeply concerned about poverty, injustice and illiteracy, and considered them barriers to peace in the world.