Die Traumdeutung
In the 17th century, the English physician and writer Sir Thomas Browne wrote a short tract upon the interpretation of dreams. Dream interpretation was taken up as part of psychoanalysis at the end of the 19th century; the perceived, "manifest" content of a dream is analyzed to reveal its "latent" meaning to the psyche of the dreamer. One of the seminal works on the subject is "The Interpretation of Dreams" by Sigmund Freud.