Question: Joseph L. Lewis (June 11, 1889 – November 4, 1968) was an American freethinker and atheist activist, publisher, and litigator, he later credited Paine's "The Age of Reason" with helping him leave theism, 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 what?
Sentence (from "Joseph L. Lewis"): He later credited Paine's "The Age of Reason" with helping him leave theism.
Relevant evidence: Yes