Rooted religiously in the texts of the Old and New testament, the term "Crisis of Faith" is a common phrase that evokes intense spiritual strife and doubt, the eternal struggle between good and evil. Since that time, the term has become a pervasive theme of literature, manifesting itself within and embodying a broad range of human affairs and secular ideals, from the moral ambiguities of patriotism and war to mankind's critical questioning of meaning and purpose in an increasingly modern world.