What English and American political activist wrote a book that helped Joseph L. Lewis leave theism?
Joseph L. Lewis: Joseph Lewis (June 11, 1889 – November 4, 1968) was an American freethinker and atheist activist, publisher, and litigator. Joseph L. Lewis:  Lewis developed his ideas from reading, among others, Robert G. Ingersoll, whose published works made him aware of Thomas Paine. The Age of Reason: The Age of Reason; Being an Investigation of True and Fabulous Theology is a work by English and American political activist Thomas Paine, arguing for the philosophical position of Deism.
Thomas Paine