It is apparent that the study of dreaming is dependent on the recall and reporting of the dream experience. There is the general recognition that remembering dreams is often a difficult if not impossible task. The dream is often so ephemeral as to be beyond capturing, beyond remembering. Freud (Freud, 1955, 43) observed that “It is a proverbial fact that dreams melt away in the morning…we can observe, too,… a dream which was still lively in the morning will melt away…in the course of the day.” Freud also recognized that a dream might persist in memory for days or years, although this was very much less common.