This intensification of inner life helped the prisoner find a refuge from the emptiness, desolation and spiritual poverty of his existence, by letting him escape into the past. When given free rein, his imagination played with past events, often not important ones, but minor happenings and trifling things. His nostalgic memory glorified them and they assumed a strange character. Their world and their existence seemed very distant and the spirit reached out for them longingly: In my mind I took bus rides, unlocked the front door of my apartment, answered my telephone, switched on the electric lights. Our thoughts often centered on such details, and these memories could move one to tears.

— Viktor E. Frankl, Man’s Search for Meaning, 1946, Beacon Press (2006 edition), p. 55-56