When Dreams Were Letters from the Gods: Dream Oracles in Classical Japan

Today we let go of dreams by breakfast, filing them away as tricks of the brain. A thousand years ago in Japan, a dream could be received like a letter addressed by a god or a buddha. People shut themselves inside temples to wait for one, wrote down what they saw, and sometimes changed the course of their lives on the strength of a single night. Through Heian diaries, the legend of the Yumedono, the dreams of the monks Shinran and Myoe, and old love poems, this column considers the loneliness and prayer of people who took dreams more seriously than waking life.

A Dream Was Something Sent to You

From ancient to medieval times, Japanese people tended to think of dreams not as something the mind produced but as something that arrived from outside. Gods, buddhas, and sometimes the dead came to a sleeper to make their will known. The dream was the road they traveled, and interpreting one was close to breaking the seal on a letter. The word yume-tsuge, a dream oracle, is a remnant of that sensibility.

The same held in matters of love. Heian poetry often seems to assume that a person appears in your dream because they are thinking of you. A face in the night might be not your own longing but the other person's heart crossing over. In an age that could believe this, a dream was one of the few messages that reached a lonely night.

So a dream was at once a private secret and, at times, a public event shared with family and those nearby. Who dreamed what might be noted down and its meaning discussed, and a single interpretation could change travel plans or the content of prayers. One might say that people then checked their dreams much as we check the weather forecast.

Waiting in the Temple: the Vigil Called Sanro

Dreams did not have to be left to chance. One could go and ask for one through sanro, staying at a temple or shrine for days on end and praying without pause. Heian aristocrats traveled to temples devoted to Kannon, the bodhisattva of compassion, such as Ishiyama-dera, Hase-dera, and Kiyomizu-dera, spending whole nights in the hall and waiting for the buddha to show them something in sleep. A dream at the end of such prayer was treated as a reply.

A vigil was not merely an overnight stay. You left home, sat in a dim hall, and repeated the same prayer day after day. For someone carrying a trouble they could tell no one, it was also time alone with their wish, cut off from ordinary life. Perhaps it was natural that a dream arriving where prayer and sleep blurred together should carry special weight.

Those who could not go themselves sometimes asked a monk to keep the vigil for them, and the dream he received was brought home as a sign of the client's future. A dream, then, did not belong only to the dreamer; it was news someone else could receive on your behalf. The mirror episode in the Sarashina Diary below was exactly such a proxy dream.

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Dreams in the Diaries of Heian Women

The author of the Kagero Diary, known as the mother of Fujiwara no Michitsuna, wrote at length about the pain of watching her husband, Fujiwara no Kaneie, drift away. At one low point she set out for Ishiyama-dera almost without telling her family. After weeping through the night in the hall, she dozed near dawn and dreamed that a man who seemed to be a priest of the temple poured water from a ewer onto her right knee. She recorded it as a sign from the buddha.

Sugawara no Takasue's daughter, author of the Sarashina Diary, is remembered as a girl who lost herself in tales. She records that a monk appeared in her dream urging her to study a chapter of the Lotus Sutra, and that she told no one and paid it no mind. Her mother had a mirror cast and sent a monk to keep vigil at Hase-dera on her behalf; he reported a dream in which the mirror showed two images, one of her lying in tears and one of a bright, happy scene. She did not listen to that either.

What is striking is that in later life she writes as if she regrets ignoring those early warnings. Looking back after her husband's death, her words carry a sense of if only I had believed. And late in life she recorded, as one of her few consolations, a dream in which Amida Buddha stood glowing gold in her garden and said that he would leave for now and come back for her later.

The Yumedono and the Legend of Prince Shotoku

In the eastern precinct of Horyu-ji in Nara stands an octagonal hall called the Yumedono, the Hall of Dreams. It is said to have been built around 739 by the monk Gyoshin on the site of Prince Shotoku's Ikaruga palace, and it is known for enshrining a hidden statue of the Guze Kannon. The name is tied to a legend: when the prince was writing commentaries on sutras and reached a passage he could not understand, he would shut himself in a hall to meditate, and a golden figure would appear in his dream to explain it.

A legend is not history, but this one shows how people of the time thought. When study and reflection reached a dead end, the answer came from outside, from something greater, in the form of a dream. The name Yumedono preserves a reverence for dreams as the place where wisdom comes down. Surrendering to sleep on a stuck night was not idleness but a posture for receiving an answer.

The Guze Kannon enshrined in the Yumedono was long kept hidden as a secret image and is still shown only during set periods. It is said by tradition to reflect Prince Shotoku's likeness, and it is fitting that it has been guarded inside a hall named for dreams. As we will see, the Guze Kannon and the prince appear together again in Shinran's dream. The Yumedono legend seems to have cast a quiet shadow over the dream faith of later ages.

Shinran at Rokkakudo, Myoe's Dream Diary

For the founders of Kamakura Buddhism, too, dreams could divide a life in two. After long years of training on Mount Hiei, Shinran vowed in 1201, at the age of 29, to spend a hundred days in retreat at Rokkakudo in Kyoto, a temple tied to Prince Shotoku. At dawn on the ninety-fifth day, according to tradition, the Guze Kannon, identified with the prince himself, appeared in his dream, affirmed that he might live alongside a woman, and promised to support his life and lead him to the Pure Land at its end. Shinran then went to study under Honen.

Myoe (1173 to 1232), who founded Kozan-ji in Kyoto, kept a record of his dreams for roughly forty years, known as the Yume no Ki. He seems to have treated dreams as part of his practice, a way of measuring his distance from the Buddha. After the psychologist Kawai Hayao published a study of this diary, Myoe's dreams became widely known to modern readers as well.

Myoe was so single-minded that, according to tradition, he cut off his own right ear in his youth out of devotion to the Buddhist path. For such a person, dreams were a mirror of his inner wavering and a window through which encouragement or warning might come. Where Shinran settled his course with one dream, Myoe kept up a conversation with his dreams over decades. The same kind of experience could be received in very different ways.

Dreams and Poetry: Ono no Komachi's Nights

The early Heian poet Ono no Komachi is known for her dream poems. The Kokinshu anthology includes one that asks, in essence, whether the person she loved appeared because she fell asleep thinking of him, and says that had she known it was a dream, she would never have woken. Someone she could not meet in waking life could be met in sleep, and the short poem holds all the regret of waking too soon.

Another of her poems says, roughly, that when her longing grows unbearable she wears her nightclothes inside out. It is understood to draw on a folk belief of the time that sleeping with your robe reversed would bring the one you love into your dream. Dreams were not only waited for; they could be coaxed with small charms. In that lies an earnest attempt to get through nights when meeting was impossible.

The link between dreams and love was not Komachi's alone. Poets spoke of a dream path along which lovers could visit one another at night, as if sleep were an invisible road between them. Feelings blocked by rank and watchful eyes in daylight could travel freely along that path. Perhaps there was a quiet resistance to the constraints of waking life in that image.

Our Reading: Those Who Weighed Dreams Above Waking Life

In this site's view, people of the classical age did not honor dreams simply because they were superstitious. They may have had few places in waking life where their voices could land. The Kagero Diary's author had no means of winning back her husband's heart, and the Sarashina Diary's author could tell no one about the gap between the life she had imagined and the one she lived. When reality would not answer, a dream at least spoke to them. A dream may have been the only reply to prayers that had no other listener.

The same loneliness shows in the vigils themselves. A woman leaves without telling her family, weeps through the night in a dark hall, and even if the dream she receives is as small as a few drops of water on her knee, she cannot help writing it down. It seems to us that the act of recording was itself a ritual, a way of confirming that she had not been abandoned.

Taking dreams seriously also carried a certain dread. As the Sarashina author regretted her ignored dreams in old age, failing to believe a dream could become a lifelong regret. In a world where dreams were letters, a letter left unread could become an irreversible mistake. This is our speculation, but the fear of ignoring an oracle may have been the other face of an anxiety that one's choices could be entrusted to no one else.

For Shinran and Myoe, dreams wore a slightly different face. They used dreams as a place to set their doubts and desires before the Buddha. As we read it, Shinran's dream oracle was a letter of permission to be saved while still carrying his weakness as a human being, and Myoe's diary resembles a long correspondence kept by someone who went on waiting for such permission. If we, a thousand years later, are still shaken by a dream, perhaps it is because some part of us is still waiting for that letter.

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What You Can Do Tonight and Tomorrow Morning

Following Myoe's example, try sleeping with paper and a pen by your pillow. As soon as you wake, jot down a few lines about the scenes, colors, and feelings you remember. You do not need to decide what it means. If you keep dating the entries, you may notice your mind returning to the same place again and again. A dream diary is a small box for collecting letters addressed to yourself.

On a morning after a bad dream, you might try yume-chigae, the old practice of turning a dream aside. Horyu-ji even has a statue known as the Yumechigai Kannon, long believed to change bad dreams into good ones. A small act is enough: open a window to let fresh air in, or write the dream on paper without saying it aloud and fold it away. Do not let a dream weigh too heavily on you, yet read it once, as you would a letter. That balance may be the wisdom the classical dreamers leave us.

Dreams mentioned in this essay

FAQ

Q. How did people in old Japan think about dreams?
A. In ancient and medieval Japan, dreams were often seen as a road by which gods, buddhas, or the dead delivered messages, rather than something the mind produced. Love poetry even suggests that someone appeared in your dream because they were thinking of you.

Q. What is sanro, and how is it connected to dreams?
A. Sanro is a vigil of staying at a temple or shrine for days to pray. In the Heian period many people retreated to Kannon temples such as Ishiyama-dera and Hase-dera hoping for a dream oracle, and the Kagero and Sarashina diaries record such vigils.

Q. Where does the name Yumedono come from?
A. The name of Horyu-ji's Yumedono is traced to a legend that when Prince Shotoku was stuck on a sutra commentary, a golden figure appeared in his dream to explain it. The hall is said to have been built around 739 by the monk Gyoshin.

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※ Dream interpretation here is entertainment drawing on psychology and folklore — it is not scientifically proven. "This site's view" is our own interpretation. If bad dreams or poor sleep continue, please consult a medical professional.