 It includes papers focusing on the upheaval in Germany, and two major works of Jung's last years, "The Undiscovered Self" and "Flying Saucers".In the earliest paper (1918), Jung theorized that the European conflict was essentially a psychological crisis originating in the collective unconscious of individuals.He gave this theory a much wider application, for example, in "Flying Saucers", about the origins of a myth which he regarded as compensating the scientistic trends of the present technological era.