An unnamed mendicant questioning the Buddha; the Buddha's answer
Form
A direct question and a precise technical definition
Length
Short — a single clean definition
Northern parallel
The four-point origin/cessation/practice template recurs throughout this book, most fully in SN 22.103-105
Difficulty
Approachable — the definition is precise and self-contained
Why this discourse
Opens Dhammakathikavagga ("A Dhamma Speaker") with a basic question rarely asked so directly elsewhere: not what should be understood, but what not understanding it actually consists of — defining ignorance itself with the same precision usually reserved for its opposite.
Reading guide
A direct question about a familiar word
A mendicant asks the Buddha directly: "they speak of this thing called 'ignorance'. What is ignorance? And how is an ignoramus defined?" — treating a term used constantly throughout the teaching as something whose precise meaning still needs pinning down.
Ignorance defined as a specific failure to understand
"It's when an unlearned ordinary person doesn't understand form, its origin, its cessation, and the practice that leads to its cessation" — repeated for each of the five aggregates in turn.
This gives ignorance (avijjā) an unexpectedly precise, fourfold structure: it is not a vague lack of information, but the specific absence of the same four-part understanding — the thing itself, its origin, its cessation, and the path — that SN 22.103-105 applied to sakkāya and dukkha earlier in this book.
Why this definition matters
Framing ignorance this precisely makes it directly addressable: since it consists in a specific missing four-part understanding, filling in that understanding is, by definition, the remedy — not a vague call to "become wiser" but a concrete list of exactly what remains unknown.
Setting up its own companion discourse
This discourse's structure — question, then fourfold definition applied to each aggregate — is mirrored exactly by SN 22.114, which asks the identical question about "knowledge" instead, with "understand" replacing "doesn't understand" as the only change.
Key terms
avijjā — ignorance — the term this discourse defines, opening Dhammakathikavagga
aviddasu — an ignoramus, one characterized by ignorance — the person this discourse also defines
samudaya — origin — the second of the four points an ignorant person fails to understand
nirodha — cessation — the third point
nirodhagāminī paṭipadā — the practice leading to cessation — the fourth point, completing the fourfold structure
The text
The complete discourse: the question about ignorance, and the Buddha's fourfold definition applied to each aggregate. Translation: Bhikkhu Sujato (CC0, SuttaCentral).
§1At Sāvatthī. Then a mendicant went up to the Buddha and said to him: “Sir, they speak of this thing called ‘ignorance’. What is ignorance? And how is an ignoramus defined?”
§2“Mendicant, it’s when an unlearned ordinary person doesn’t understand form, its origin, its cessation, and the practice that leads to its cessation. They don’t understand feeling … perception … choices … consciousness, its origin, its cessation, and the practice that leads to its cessation. This is called ignorance. And this is how an ignoramus is defined.”
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Self-check quiz
Ten questions. Click an answer to see immediate feedback. No score is recorded — this is for your own checking.
Question 1 of 10
What question does the mendicant ask the Buddha?
Correct: A. A basic term used constantly, here given a precise definition.
Question 2 of 10
How does the Buddha define ignorance?
Correct: A. A precise fourfold structure, not a vague lack of information.
Question 3 of 10
Which four points make up this discourse's definition of ignorance?
Correct: A. The same four-part template applied to sakkāya and dukkha earlier in SN 22.103-105.
Question 4 of 10
How many aggregates does this fourfold failure to understand apply to?
Correct: A. Repeated identically for form, feeling, perception, choices, and consciousness.
Question 5 of 10
Why does defining ignorance this precisely matter?
Correct: A. A concrete list of what is missing, rather than a vague call to become wiser.
Question 6 of 10
What discourse mirrors this one's structure exactly?
Correct: A. "Understand" replaces "doesn't understand" as the only structural change.
Question 7 of 10
Who asks the Buddha this question?
Correct: A. Not identified by name in this discourse.
Question 8 of 10
What vagga does this discourse open?
Correct: A. SN 22.113 opens Book III's twelfth vagga, named for the "Dhamma speaker" discourses within it.
Question 9 of 10
Where is this discourse set?
Correct: A. Continuing the setting of most of this book's discourses.
Question 10 of 10
What is an "ignoramus" (aviddasu), according to this discourse?
Correct: A. Defined precisely by the same fourfold failure named for ignorance itself.
