Oneirocritica

Oneirocritica (The Interpretation of Dreams) is an ancient Greek treatise on dream interpretation written by Artemidorus in the 2nd century AD, and is the first extant Greek work on the subject, in five books. The first three volumes were intended for the general public, providing an encyclopedic treatment of the subject matter of dreams, and the remaining two volumes were written for the private use of the author's son, a novice dream interpreter. Artemidorus inscribed the book "Artemidorus of Daldis", despite having been born in Ephesus, to commemorate the little-known birthplace of his mother in Lydia.

Artemidorus suggests that dreams are unique to the individual, and that a person's waking life will affect the symbols in his dreams. He shows awareness of the dreaming mind's capacity to use metaphors in its messages.

Michel Foucault, who discusses the Oneirocritica in The Care of the Self, the third volume of his The History of Sexuality (1976-1984), describes the text as a practical, experiential guide. According to Foucault, the work reveals culturally salient patterns relating to "the ethical experience of the aphrodisia."

The first three books divide dreams into major groups. Book one is dedicated to the anatomy and activity of the human body: 82 sections interpret the appearance in dreams of subjects like head size, eating, and sexual activity. For example, section 52 says, concerning one activity of the body, "All tools that cut and divide things in half signify disagreements, factions, and injuries ... Tools that smooth out surfaces predict an end to enmities."

The second books treat objects and events in the natural world, such as weather, animals, the gods and flying. The section on animals includes mammals (domestic and wild), sea creatures, reptiles, and those that fly. Section 12 reads, "There is an affinity between all wild animals and our enemies. A wolf signifies a violent enemy ... A fox indicates that the enemy will not attack openly but will plot underhandedly."

The third book is miscellaneous.

Artemidorus moves from dream content to the technique of dream interpretation in book four, which is addressed to his son. He states that the interpreter needs to know the background of the dreamer, such as his occupation, health, status, habits, and age. The plausibility of dream content should be considered, which cannot be done without reference to the dreamer. The interpreter should find out how the subject feels about each component of the dream. In book five, Artemidorus presents a further 95 dreams he collected, for his son to use as practice material.

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