Bart Campolo (born April 2, 1963) is an American humanist speaker and writer. He is the son of Tony Campolo, and was a pastor before transitioning from Christianity to secular humanism. Campolo is the co-founder of Mission Year and the author of several books including Kingdom Works: True Stories of God and His People in Inner City America and Things We Wish We Had Said, which he co-wrote with his father. His most recent book, Why I Left, Why I Stayed, also co-written with his father, is a reflection on both men's "spiritual odysseys and how they evolved when their paths diverged." Campolo is known for giving impassioned speeches to young people, particularly recruiting them to be more involved in their local urban areas. He was the first Humanist Chaplain at the University of Southern Cal