In the seen, only the seen: what a 2,500-year-old instruction teaches someone who builds AI agents

A very short teaching

Bāhiya of the Bark Cloth lived on the ocean shore at Suppāraka, where people honoured him and kept him well supplied. Sitting alone one day, he decided he must be one of the perfected ones. A deity who had once been his relative came and told him plainly that he was not, and that he didn't even have the practice that would get him there. The deity pointed him north, to the Buddha at Sāvatthī, and Bāhiya left right away.

He found the monastery, was told the Buddha had gone into town for alms, and hurried after him. He bowed in the street and asked to be taught. Twice the Buddha said it wasn't the time. The third time Bāhiya pressed harder: you never know, he said, when either of our lives might end. So the Buddha gave him this:

In the seen will be merely the seen;in the heard will be merely the heard;in the thought will be merely the thought;in the known will be merely the known.

The text says Bāhiya's mind was freed right then, "by not grasping". Soon after the Buddha left, a cow with a young calf charged at him and killed him. The Buddha had the monks cremate the body and build a monument, and told them that Bāhiya "has become fully quenched".¹

I like that he would not wait. My attention, which a late AuDHD diagnosis finally gave a name to, does far better with an instruction that fits on one line than with a forty-minute talk.

What the words actually say

The Pāli is short: diṭṭhe diṭṭhamattaṁ bhavissati. Roughly, "in the seen, merely-the-seen will be". The verb is in the future tense, which is why Sujato writes "will be". It reads as something you train towards.

There are four terms:

• diṭṭha, the seen
• suta, the heard
• muta, which Sujato renders "thought" and Thanissaro Bhikkhu renders "sensed"
• viññāta, the known (Thanissaro: "cognized")

The third term is where translators part ways. Thanissaro's "sensed" is often read as covering the remaining bodily senses: smell, taste and touch. Sujato's "thought" puts thinking itself on the list. Thanissaro's version of the key line reads: "In reference to the seen, there will be only the seen."² I use Sujato in the body of this essay because his translation is dedicated to the public domain and because I find the plainer English easier to sit with. I'd read them side by side.

What "only the seen" is not

It is easy to hear this as a command to go blank. I don't read it that way. Nothing in the instruction tells Bāhiya to stop seeing, or to see less. If anything it asks him to see more completely, without the extra layer that tends to arrive a split second later and take over.

Sujato's rendering makes one thing plain. Thought is on the list: "In the thought will be merely the thought." So I don't think the practice can be a rejection of thinking. Could a thought be met the same way as a sound: as something that appeared, and not as a verdict on who I am? I think so, on good days.

Nor is it numbness. When I sit with a sound I hear it more sharply. What goes quiet, on good days, is the commentary about it.

A day of building agents, read through Bāhiya

Most of my working day is spent building AI agents: a language model wired to tools, a loop and some files it can read and write. A lot of the job is turning raw input into labels. A message comes in, a step decides "urgent" or "routine", another step picks an action. Designing that stack of layers is what I get paid for.

Bāhiya's instruction asks me to watch the same stacking in myself.

Take a typical morning. An overnight run has failed. What is seen: red text in a terminal, a stack trace, a timestamp, a timeout on one tool call. What arrives about half a second later: this whole approach is wrong, and then, faster still, I'm not good at this. Only the first part was on the screen.

Reading model output is harder. An agent writes "I apologise, I should have checked the file first." The seen is a sentence. Within a breath I have added a someone who is sorry, or a someone who is faking it. Reviewing fifty transcripts in an afternoon, I catch myself thinking the agent is "getting lazy" by the fortieth. It's the same model with the same weights it had at nine. I was the one getting tired.

The models do their own version of this. Give one a thin, polite email and ask what the sender wants, and it will often report that the sender is "clearly frustrated". Much of my prompt writing amounts to a small Bāhiya instruction for machines: report what is in the document, mark what you are inferring, don't invent the person. I'm asking for the same thing in both places, really. Keep the input apart from the story built on top of it, whether the model is building the story or I am.

"No you in connection with that"

The second half of the teaching is stranger. In Sujato's words: "When you have trained in this way, you won't be 'by that'. When you're not 'by that', you won't be 'in that'. When you're not 'in that', you won't be in this life or the next or between the two. Just this is the end of suffering." Thanissaro puts the first step as "there is no you in connection with that."

I keep my reading of this simple. I practise; I don't teach. In my own experience, the "me" seems to turn up after contact, as part of the story. First the red text. Then "my code". Then "my failure". When the seeing stays merely seeing, there is less for that "me" to attach to. I make no claim beyond that, and I have no attainment to report. Some days the gap between the stack trace and "I'm useless" is a little wider than it used to be.

Here I go one step further than the text, and I'm not sure the tradition would follow me. I agree there is no seer in the sense the sutta means: no me doing the seeing. That me is a fabrication, held together by a name, a history, a social status, an education, the way I grew up. Take all of that away and I don't think nothing is left. What's left, as far as I can tell, is pure awareness. Doesn't the seen still need something it is seen in, even with no one standing behind it? I can't fully square that with "there is no you in connection with that". For now I hold both.

About seven years without a drink have taught me something close to this. The craving was a sensation in the body. "One won't hurt" was a story that arrived afterwards, dressed up as a fact.

This wasn't a one-off for a man in a hurry, either. The same instruction appears in SN 35.95, given to Māluṅkyaputta, an old monk who asked for a brief teaching so he could go off and practise alone.³

Try it for one minute

Sound is usually the easiest place to start.

1. Set a timer for one minute. Lower your gaze or close your eyes.
2. Wait for a sound. A fan, perhaps, or traffic outside.
3. Let it be heard: loud or soft, near or far.
4. When a label arrives ("fridge", "annoying", "is that the door?"), notice that the label came second. Then go back to the sound.
5. When the timer goes, open your eyes and read one line of text on your screen. Notice the shapes, and notice the meaning arriving. You can't stop yourself reading. The practice is seeing the order things happen in.

That's all. It's a practice, not a treatment for anything, and some minutes it will feel like nothing happened. If you'd like more short practices for real lives, there's a section of the site for them, and the newsletter sends new essays by email.

What this does and doesn't say about machines

The sutta says nothing about AI. It is advice to one person about his own experience, and I don't want to stretch it into a theory of machines.

What carries over, for me, is a working rule: keep the text on the screen apart from the person you feel behind it. I don't believe anyone is there. Whether anyone is there is a longer story: I take it on in I build AI agents all day. Why do I feel they can't be conscious?, which sits in the AI and consciousness section.

There's a tempting argument that if the self is a process added after contact, maybe a model's "I" is no different from ours. I don't think it follows, though I can't prove it. The teaching describes how a self-view gets built inside experience. My "I" seems to be a fabrication too, but one that happens in awareness: on the cushion, when it falls away, something is still aware. A model's "I" is a word it prints, assembled from our writing. Take that word away and what's left? As far as I can tell, nothing. I can't find anything in there that was aware in the first place.

FAQ

What is the Bahiya Sutta?

A short discourse in the Udāna (Ud 1.10) about Bāhiya of the Bark Cloth, an ascetic who travelled to find the Buddha and received a one-line instruction on the senses. The teaching itself is only a few lines long.

What does "in the seen, only the seen" mean?

It asks you to let seeing be seeing, without immediately adding a story or a self that owns the experience. The same goes for hearing, for the third term (sensed or thought) and for what is known.

Where is the Bahiya Sutta in the Pāli Canon?

It is Udāna 1.10, the tenth discourse in the first chapter of the Udāna, which belongs to the Khuddaka Nikāya. The same instruction also appears in SN 35.95.

Who was Bāhiya of the Bark Cloth?

An ascetic named for the bark cloth he wore, who lived at Suppāraka on the coast and was widely respected. He wrongly believed he was perfected, was set right by a deity, and went to the Buddha. He died soon after receiving the teaching.

How do you practise "in the seen, only the seen"?

Start with one sense, usually sound, for a minute at a time. Notice the raw experience, notice the label or story that follows, and return to the raw experience without fighting the label.

Is this the same as noting practice?

Related, but I wouldn't call them the same. Noting uses a soft mental label to mark what is happening. Bāhiya's instruction seems to point at the moment before the label, though some people find noting a useful way in.

Which translation should I read?

Bhikkhu Sujato's on SuttaCentral is free and in the public domain, which makes it easy to quote and share. Thanissaro Bhikkhu's on Access to Insight is worth reading next to it, especially for the third sense term and his note on the journey.

Sources

1. With Bāhiya (Udāna 1.10), translated by Bhikkhu Sujato, SuttaCentral (public domain, CC0).
2. Bāhiya Sutta (Udāna 1.10), translated by Thanissaro Bhikkhu, Access to Insight (CC BY-NC 4.0).
3. With Māluṅkyaputta (SN 35.95), translated by Bhikkhu Sujato, SuttaCentral.
4. Udana 1.10: Bahiyasutta translation question, SuttaCentral forum.

How this was made: the idea, the practice and the final edit are mine. An AI assistant helped with research, fact-checking and copy-editing, and never invented experiences or quotes.