The oldest text we have that looks like a bedtime story is a clay tablet held in the collection of the University Museum in Philadelphia, catalogued as CBS 14068. It dates to roughly 2000 BCE. It is short — about 40 lines on the surviving fragment — and addressed, by its grammar, to a small child.

The text begins:

Little one, the canal-water is still. The owl has gone home. The reed-fence is shut. Sleep now, my small frog, my small bird.

What follows is a list of things that are also sleeping: the threshing floor, the temple gate, the lamb in the fold, the gods of the harvest. The list is repetitive in the way that lullabies still are. The implication — that the world has organized itself into stillness for the child’s benefit — is identical to the implication of Goodnight Moon nearly four millennia later.

Why this matters

A small group of Sumerologists have argued, persuasively, that the tablet was not a poem to be read but a script to be spoken — a kind of cribsheet for an adult who needed to settle a particularly resistant child. The evidence: the line endings include performance marks (a wedge under the right edge of certain signs) that look, in other contexts, like cues for a singer.

If they’re right, then the oldest written bedtime story in the world is, fundamentally, a parent who is too tired to improvise asking the literate scribe down the road for help. The act of writing down the script is a kind of admission. I can’t remember it tonight. Could you set it down for me?

The implication for our archive is unflattering and a little wonderful. Bedtime storytelling appears to be one of the oldest continuous human practices we can document, and it appears to have begun, in writing, with a stressed adult asking for backup.

What hasn’t changed

Three features of CBS 14068 reappear in essentially every bedtime tradition we’ve catalogued:

1. The roll call of sleeping things. A list of animals, places, or people that are also asleep. (Compare Goodnight Moon, the Yoruba o sun, o sun lullabies, and the Czech Spinkej, spi.)
2. The diminutive address. “Little frog,” “little bird,” “little lamb.” The diminutive is doing emotional work — naming the child as small and beloved, signaling safety.
3. The closure formula. A short, ritualistic sentence at the end signaling that this is over. Sleep now. Most folk traditions have one. They function the way “amen” functions at the end of a prayer — the auditory cue that releases the speaker and the listener from the ritual.

These three features are so consistent across cultures, periods, and languages that the most parsimonious explanation is that they’re doing some load-bearing developmental work — and the cultures that didn’t include them stopped producing successful bedtime traditions and quietly lost them.

What did change

The Sumerian tablet does not have a plot. It has a sequence — things settling, things quieting — but no protagonist on a journey. Plot enters bedtime literature surprisingly late. The earliest narrative tales clearly intended for children at bedtime appear roughly two thousand years after CBS 14068, in the Indian Panchatantra (c. 300 BCE) and the Japanese Otogi-zōshi tradition. Before that, what we’d recognize as bedtime stories are almost entirely lyrical, repetitive, list-based — much closer to a long lullaby than to East of the Sun, West of the Moon.

If you’ve ever wondered why the most enduring bedtime books for very young children — Goodnight Moon, The Going-to-Bed Book, I Took the Moon for a Walk — are list books rather than narrative books, the answer is encoded in 4,000 years of practice. The list form is the older one. The list form is what works on a child who is genuinely tired.

A small caveat

CBS 14068 is not the only candidate for “first.” There are older lullaby fragments in cuneiform — including a fierce Babylonian piece from c. 1600 BCE in which the speaker explicitly threatens the demon Lamaštu with banishment if she dares wake the baby — and there are claims for older Egyptian texts that we find less convincing because the surviving copies are fragmentary.

But CBS 14068 is the oldest tablet we have that behaves like a bedtime story. It addresses a child. It lists things settling. It closes with a small ritual sentence. It is, in form, the same thing parents are doing tonight with their tablets and their picture books and their tired voices.

The continuity is the point.

— Sources: van Dijk, J., “La sagesse suméro-accadienne” (1953); Lambert, W.G., “Babylonian Wisdom Literature” (1960); Kramer, S.N., “Sumerian Mythology” (1944, rev. 1961).