Gilkey was a prolific author, with 15 books and over 100 articles to his credit. but was popularly known for his writings on science and religion. His early books and articles demonstrated the existential power of his experiences, from his early pacifist professions as a student at Harvard University, where his classmates included, among others, future President
John F. Kennedy,
Pete Seeger, and Cardinal
Avery Dulles, to his teaching in China and his experiences as a
POW. His teachers, especially Niebuhr and Tillich, at Union Theological Seminary, helped him with methods and categories to formulate a powerful and creative theological vision of his own. In the 1970s and 1980s, Gilkey's theological vision was colored by the growth of Buddhism, and Sikhism as both religions began to influence religious life in America. He held the view most world religions enjoyed "rough parity". "The question for our age," he once wrote, "may well become, not will religion survive, as much as will we survive and with what sort of religion, a creative or demonic one?" == Books ==