Saturday 12 February 2022

A Very Brief History of Dream Interpretation

 This is part six from a forthcoming book called Collected Essays: Volume Two.

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A Very Brief History of Dream Interpretation

Dreams are not such a central part of our culture anymore, but they were a lot more central to previous cultures and to aboriginal cultures. Although they are not as central, dreams do not fail to baffle us with their bizarre, non-linear and jarring imagery. This essay will offer a very brief history of dream interpretation by looking at ancient Greece, medieval Europe, Sigmund Freud and contemporary neuroscience. It is a predominantly Eurocentric history and does not look at aboriginal cultures or the orient.

This essay will start by looking at ancient Greece. The Greeks made a distinction between significant and insignificant dreams, the former being caused by hopes, fears and digestion. On the other hand, significant dreams were symbolic interpretations and visitations by gods, ghosts and friends. Indeed, people often thought that dreams were divine interventions. The Greeks were often visited by Asclepius, a divinity with healing powers. People talked to mystical gurus who interpreted dreams and gave medical advice, diagnoses and cures. Religious devotees would have a significant dream and then practice incubation or ritual sleep in a sanctuary. Certain objects might encourage the communication, such as ritual bathing, animal sacrifice or sleeping on animal skin. The Greek religious culture allowed people to believe in the apparent truth of these dreams (Kamil 2014).

            The main book that dealt with dream interpretation was The Interpretation of Dreams by Artemidorus, otherwise known as Oneirocrtitica, and it is the only book on dream interpretation that has survived antiquity. Dreams from antiquity contain numerous references to horrible punishments such as crucifixion, castration, having sex with Artemis and turning into a river god. Indeed, the book by Artemidorus contains numerous references to these things. Artemidorus’ book also contains references to having sex with mothers, which influenced Sigmund Freud centuries later (Hall 2020). Artemidorus was a resident of Ephesus and set out to write a theoretical guide to dreams, which were important in antiquity, as people thought that they prophesised the future. Artemidorous classified dreams as ‘enhypnia’ and ‘oneiroi,’ the former being non-predictive dreams which recycle what has happened during the day and the latter being predictive dreams which require interpretation. Dealing with predictive dreams required skill, experience and a well-developed set of interpretive tools. Artemidorus made wide historical research, extensive travel and classified and arranged his material. However, he emphasised the importance of direct experience rather than text-book learning. Dreams that occurred after incubation in a temple were classed as God-sent. Otherwise, if they occurred elsewhere, they were products of the mind and did not come from the external source. Artemidorus used numerology, puns, wordplay and analogies, but he thought that it was important to recollect dreams as much as possible. He thought that it was important for the dream-interpreter to have as much information about the dreamer’s background, status, present circumstances and his medical and psychological condition. Dreams can have different significances and different outcomes depending on whether the dreamer is a man or a woman, slave or free, rich or poor or healthy or sick. Artemidorus discusses about 1,400 dreams in his book (Hammond 2020).

            Artemidorus was an example of ancient dream theory, but this essay will now look at representations of dreams in ancient fiction. One of the most striking representations of dreams in antiquity occurs in The Odyssey by Homer. It would be classed as a ‘significant’ dream, as it is predictive of the future. Penelope waits for Odysseus to turn up and she is attended by fifty suitors. She dreams that an eagle kills fifty geese. Later on, Odysseus kills the fifty suitors, so the dream turns out to be prophetic and a wish-fulfilment. The bird tells the following to Penelope in the dream: ‘This is not a dream but a happy reality which you shall see fulfilled. Then geese were your suitors and I was the eagle. I am your husband, home again and ready to inflict a gruesome fate on every man among them’ (Homer 1991, p. 304). Odysseus later says: ‘Odysseus himself […] will make it come true […] there is not one will escape his destined death’ (p. 305). It is a prophetic dream and it is representative and metaphorical. However, the eagle spells out what will happen in a very direct way.



            This essay will now briefly look at what some of the ancient philosophers said about dreams. A philosopher who occasionally mentioned dreams was Heraclitus. He likened our normal waking life to sleep and urged ‘to wake up to a higher understanding’ (Waterfield, p. 33). It is only a select elite that manage to apprehend the underlying nature of things, which he calls ‘the logos.’ Although Heraclitus might seem to be disparaging of dreams in that sentence, there are some fragments where he says that dreams have great insight. These are some of his fragments: ‘Even a soul submerged in sleep is hard at work and helps make something of the world’ (Heraclitus 2003, p. 57). He also says: ‘The waking have one world in common. Sleepers, meanwhile, turn aside, each into a darkness of his own’ (p. 63). Waking life is something that we all share, but the dream world is something that only makes sense to a particular individual.

            This brief history will now look at the medieval ages. Similarly, the medieval era also has its own classic dream interpretation book, which was Somniale Daniels. This was a dream manual that circulated during the medieval period and the Renaissance and it was the most popular manual during this period. It was structured through dream symbols and their concise explanations (Cappozzo 2020, p. 1). It consisted of a list of symbols arranged in alphabetical order and interpreted as portending something good or evil for the dreamer (p. 1). Key terms in the text corresponded to the subject of a dream (p. 1). It transcended all classes in society, as everyone consulted the manual. Indeed, Latin and vernacular versions existed (p. 3), but the vernacular version was more secular and the Latin version was more ecclesiastical (p. 12). These were some of the prophesies that the manual made: ‘To see a storm means profit’ (p. 28), ‘To see snakes means damaging the enemy’ (p. 28), ‘To see snakes means damaging the enemy (p. 28), ‘To see blood means envy’ (p. 27), ‘To laugh in a dream means sadness’ (p. 27), ‘To hear an organ playing means being aware of a friend’ (p. 26), ‘To own a garden means happiness’ (p. 24). The medieval ages, like antiquity, saw dreams as messages that portended the future. Also, like the ancients, dreams were a lot more central to their culture than they are in ours.

             The medieval ages were dominated by Christianity. As such, this essay will now explore religious interpretations of dreams during this period. Indeed, dreams were seen as divine interventions (Kunzel 2002, p. 215). Dreams were seen as an active communication between the dreamer and another world. This is what Gregory the Great said about dreams: ‘The voice of God is indeed heard in dreams, when with a tranquil mind there is quiet from the action of this world and in this silence of mind divine precepts are perceived’ (Wellesley 2018). However, a small group of clergymen, mainly monks, had a monopoly on recording dreams in writing (Kunzel, p. 216). For medieval religious writers, dreams exhibit traces of Judeo-Christian traditions (216). In addition to this, the medieval clergy believed that supernatural powers could intervene through dreams (p. 216). They did this because according to the clergy God would send angels to people through dreams, but the devil also sent demons (p. 216). There was little notion that dreams came from people themselves, but the ancients did entertain this notion (p. 216). However, like the ancients, the medieval period did think that dreams contained predictions (p. 216). Additionally, the medieval clergy stressed that dreams had to be interpreted through Christian doctrine (Keskiaho 2015). For instance, Pope Hadrian I interpreted Charlamagne’s dream, who was king of the Franks. However, since his dream did not correspond to biblical imagery, it was interpreted as being illusionary. Gregory the Great thought that dreams had to be interpreted through spiritual judgement. Although dreams were not an integral part of theology, it was used heavily in the imagery of the period (Keskiaho 2015).



            This essay will explore how dreams were classified by the medieval clergy. According to Macobius, there are five types of dreams – the enigmatic dream, the prophetic dream, the oracular dream, the nightmare and the apparition. The enigmatic dream is difficult to interpret, the oracular dream is when the priest or pious person clearly reveals what will transpire and what action to take or to avoid. The prophetic dream shows event that will come true. Finally, nightmares are unimportant apparitions that arise due to stress (Wellesley 2018). Additionally, dreams were also classed as a temporary state between earthly life and judgement in heaven: ‘[A] temporary state of the disembodied soul as it awaits resurrection of the body at the last judgement’. Writers in the Old Testament spoke about death being a kind of sleep (Collins 2019). Dreams were classified into these five categories, but they were also classed as a transitory state between earthly and divine worlds.

            Dreams were largely seen as divine interventions in antiquity and the medieval period, although this was especially the case in the medieval period. However, Sigmund Freud constructed an atheistic belief system with psychoanalysis in the late 19th and early 20th centuries. Dreams were a crucial part of his system and he devoted an entire book to the subject with The Interpretation of Dreams (1900). For Freud, dreaming is the unconscious at work, as it transforms the latent content into the manifest content. The dream circumvents repression and censorship and reveals what we really think and wish. Dreams also involve ‘condensation’; that is, they take a number of elements and combine them into one whole. They also involve ‘displacement,’ as they represent seemingly insignificant things. Dreams might be about something, but the dream shows that it is about something else. Emotions are associated with one idea and it detached from that idea and attached to another one. Dreams also perform a ‘secondary revision,’ which are more logical (Freud Museum London year).

            This essay will now look at segments from The Interpretation of Dreams. Freud says in the book that, although dreams might seem incomprehensible, they lend themselves to interpretation (1999, p. 79). For Freud, dreams do possess meaning and that ‘a scientific method of dream interpretation is possible’ (p. 80). He interpreted thousands of dreams in an allegedly scientific manner (p. 80). Freud, echoing antiquity, thinks that dreams represent wish fulfilments (p. 98). Everything said and spoken in dreams are reproductions of words and allusions to events retained in the dream thoughts (p. 238). Crucially, for Freud, he thinks that dreams come from the unconscious (p. 361), but that these unconscious thoughts are repressed and manifest themselves in our dreams (p. 404). For Freud, the unconscious is ‘the question of psychology’ (p. 404), as it is ‘the basis for the life of the psyche (p. 405). We are conscious during our waking life, but the unconscious comes into being whilst we are asleep (p. 405). Dreams are the way they are because they are ‘unconscious thinking.’ However, the unconscious is also active during the day, but it is mediated by the conscious mind (p. 405). Dreams seem to enact unconscious fantasies and probably arise due to repressed sexual impulses (p. 405). Freud says the following about this: ‘[Dreams are an] expression for impulses which are hampered by resistance by day, but are able to draw reinforcement from deep sources of excitation by night’ (p. 406). Dreams reproduce the ‘dream wish’ and help us to ‘rediscover’ the unconscious (p. 406). These theories claim that dreams occur due to psychological activity and, unlike earlier periods, Freud attributes none of this to supernatural intervention. Whilst all this is very interesting, it is not backed up by empirical investigation. Karl Popper claimed that Freud’s theories were pseudo-science (Okasha 2002, p. 12), as he made claims that could not be falsified, and his ideas are no longer influential in psychology (Yeung 2021).



            Indeed, there is no proof of Freud’s claims in neuroscience. According to neuroscience, dreams occur due to brain plasticity and REM sleep. Brain plasticity occurs when neurons interconnect and find new partners. They constantly change and neurons pass on different information to each other. Like plastic, the brain assumes new shapes and changes. The brain includes eighty-six billion neurons and 0.2 quadrillion connections, which rewire every moment of our lives. Neuroscience used to think that different parts of the brain were predetermined to perform certain functions. However, recent discoveries now show that the brain is assigned a task, which is passed on to the back of the brain, the visual cortex. The visual cortex is active at night, when neurons in the visual cortex overpower the senses. During sleep, we experience REM sleep for ninety minutes, which stands for Rapid Eye Movement, and this is when dreams usually occur. Some dreams can occur during non-REM sleep, but these dreams are usually abstract and are less vivid. REM sleep is triggered by a set of neurons that pump activity into the visual cortex.  Circuitry in the brain paralyses the muscles in the body during REM sleep, so that the brain can stimulate visual experience without moving the body. Neuroscientists think that dreams occur so as to prevent the other senses from taking over the visual cortex when it is unused (Eagleton and Vaughn 2020).

             This essay will now examine how REM and brain plasticity cause dreams. Dreaming is caused when a small group of cells are switched on and they execrate a chemical called ‘acetylcholine.’ This chemical activates the higher parts of the brain and they generate meaningless images. These meaningless images are made from ‘noisy’ signals that are sent up from the brain. This is later counteracted by another group of cells which execrate two chemicals called noradrenaline and serotine, which switch off the cholinergic activation. The frontal lobe of the brain, which is above the eyes, contain a large fibre-pathway which transmit a chemical called ‘dopamine.’ This is passed on from the middle part of the brain to the higher parts. Damage to this pathway makes dreaming impossible, but it leaves the REM cycle unaffected. Chemical stimulation of the dopamine pathway leads to a massive increase in the frequency and vividness of dreams without having an effect on the frequency and intensity of REM sleep (Solms 1999). Dreams that occur during REM sleep are often bizarre and have something to do with personal concerns. The dreams are often similar to psychotic experiences, since they involve false beliefs and distorted sensory perceptions. Indeed, dream reports are often similar to reports of people experiencing psychosis (Munt 2017). All these discoveries debunked Freud’s speculations. Although Freud saw dreams as profoundly meaningful, they are now seen as meaningless. For Freud, dreams could explain all of our underlying problems and motivations. Now they are largely seen as meaningless images that arise due to psychological processes. Indeed, they are seen as no different from the beliefs of psychotics.

            Dreams were a central part of Greek culture. They distinguished between significant and insignificant dreams and they claimed that the former were prophetic. People often consulted gurus who interpreted significant dreams. Artemidorus wrote an entire book that interpreted dreams and it was very popular during antiquity. Dreams feature in ancient fiction, notably in The Odyssey by Homer. The story features a prophetic wish-fulfilment, which was a common feature of ancient dream interpretation. Heraclitus was an ancient Greek philosopher who included dreams in his writings. For him, people were constantly asleep and that a few enlightened individuals could access reason, ‘the logos.’ He also mentioned in one of his fragments that individuals enter their own private world whilst we all share the same world in our waking life. The most important book of dream interpretation in the medieval period was Somniale Daniels, which was a manual that contained symbols. Although dreams were not a central part of medieval theology, they were a central part of Medieval culture. Dreams were seen as divine interventions, as people thought that either God or the devil sent messengers that appeared in our dreams. Freud constructed an atheistic doctrine with psychoanalysis and dreams were a crucial part of it. For Freud, dreams reveal the unconscious mind that permeates all our thoughts and actions. Freud thought that dreams could be scientifically analysed and understood. Although he was an atheist, Freud echoed the ancients and the medieval period, as he did think that dreams were wish fulfilments. Freud was a major 20th century figure, but none of his speculations have been confirmed by empirical investigations in neuroscience. According the neuroscience, dreams are caused by brain plasticity and Rapid Eye Movement. Neurons overpower the visual cortex and this activity causes dreams. Transmission of the chemical ‘dopamine’ is also crucial to dreaming. Reports of dreams are highly similar to the behaviour of psychotics, as they are deluded, their senses are disorganised and they experience hallucinations. Although dreams were very meaningful to antiquity, the medieval period and to Freud, they are now seen as meaningless images which are caused by cerebral activity. Even so, they still never fail to bemuse us with their bizarre images. Although they are not as prevalent in our culture, they do often appear in cinema and literature and the arts continue to use them as a source of inspiration.

Words Cited

            Cappozzo, Valerio. (2020) ‘The Transmission of the Somniale Daniels, from Latin to Vernacular Italian.’ In Translat Library. Vol. 2: No. 1.

Collins, Christopher. (2019) ‘Poetics of the Medieval Dream.’ In Creative Commons. Available from: https://hcommons.org/deposits/item/hc:23871/

Eagleman, David and Vaughn, Don. (2020) ‘Why do we Dream? A New Theory on How it Protects Our Brains.’ In Time. Available from: https://time.com/5925206/why-do-we-dream/

Freud, Sigmund. (1999) The Interpretation of Dreams. Originally published in 1900. Translated by Joyce Crick. Oxford: Oxford University Press.

            Hall, Edith. (2020) ‘Sex on the Brain.’ In Times Literary Supplement. Available from: https://www.the-tls.co.uk/articles/artemidorus-interpretation-of-dreams-review/

            Hammond, Martin. (2020) ‘Artemidorus on Dreams.’ In Classics for All. Available from: https://classicsforall.org.uk/reading-room/ad-familiares/artemidorus-dreams

            Heraclitus. (2003) Fragments. Translated by Brooks Haxton. London: Penguin.

Homer. (1991) The Odyssey. Translated by E. V. Rieu. London: Penguin.

            Kamil, Miriam. (2014) ‘Dreams and Prophecy in Ancient Greece.’ In Ancient Origins. Available from: https://www.ancient-origins.net/myths-legends-europe/dreams-and-prophecy-ancient-greece-002107

Keskiaho, Jess. (2015) ‘Images and the Images of Dreams in the Early Middle Ages.’ In Cambridge Blog. Available from: http://www.cambridgeblog.org/2015/07/images-and-the-images-of-dreams-in-the-early-middle-ages/

Kunzel, Rudi. (2002) ‘Medieval Dreams: A Sample of Historical and Psychoanalytical Criticism.’ In Psychoanlyticsche Perspectieven. 20:2, p. 215-233.

Mutz, Julian. (2017) ‘Exploring the Neural Correlates of Dream Phenomenology and Altered States of Consciousness During Sleep.’ In Neuroscience of Consciousness. Volume 2017, Issue 1.

Okasha, Samir. (2002) Philosophy of Science: A Very Short Introduction. Oxford: Oxford University Press.

Solms, Mark. (1999) ‘The Interpretation of Dreams and the Neurosciences.’ In Freud’s Traumdeutung.

Unknown author. (2018) ‘The Dream Work.’ In Freud Museum London. Available from: https://www.freud.org.uk/education/resources/the-interpretation-of-dreams/the-dreamwork/#:~:text=The%20dream%2Dwork%20is%20the,wishes%20to%20get%20past%20censorship.

Water, Robin. (2000) The First Philosophers: The Presocratics and the Sophists. Oxford: Oxford University Press.

Wellesley, Mary. (2018) ‘Dream Visions.’ In British Library. Available from: https://www.bl.uk/medieval-literature/articles/dream-visions

             Yeung, Andy Wai Kan. (2021) ‘Is the Influence of Freud Declining in Psychology and Psychiatry? A Bibliometric Analysis.’ In Frontiers in Psychology. Vol. 18.