CH04: Two Roots (Mūla) — Avijjā & Taṇhā

At-a-glance: Foundations • Causal anchors (Past Cause & Present Cause)

A. Definition & place in DO

• Two roots orient the wheel without inventing a first cause:

  • Past-cause root: Avijjā (ignorance) → conditions saṅkhārā, launching the stream (SN 12.1).

  • Present-cause root: Taṇhā (craving) ← conditioned by vedanā, drives escalation to upādāna → (kamma)bhava (SN 12.1).

• Avijjā (per SN 12.2): not knowing dukkha, its origin, its cessation, and the path (the four noble truths).

• Taṇhā (per SN 12.2): six classes of craving: for forms, sounds, odors, tastes, tangibles, mental-objects (rūpa, sadda, gandha, rasa, phoṭṭhabba, dhamma).

• Place in the four periods (Ch02): Avijjā sits in Past Cause (1); Taṇhā in Present Cause (3). Their downstream effects appear as Present/ Future Effects (2/4).

• Rounds overlay (Ch03): Avijjā, taṇhā, upādāna = Kilesa; saṅkhārā, bhava = Kamma; experiential results = Vipāka.

B. Mechanism (how the two roots condition)

• From past bias to present build:

  • Avijjā → saṅkhārā (C1’s upstream): skewed view births intentions/acts.

  • That kamma matures as present vipāka: viññāṇa → nāma-rūpa → saḷāyatana → phassa → vedanā.

• Live tipping point (C2):

  • With feeling (vedanā), taṇhā seeks pleasant, resists painful, clings to neutral—feeding upādāna → bhava.

• Projection (C3):

  • Bhava → jāti carries the stack forward as future effect with jarāmaraṇa.

• Cessation read (SN 12.1):

  • Ending avijjā via right view collapses its progeny.

  • Cooling taṇhā at the moment of vedanā prevents upādāna → bhava, starving the chain.

C. Practice (micro-drills, 1–3 minutes)

1. Four-Truths Flashlight (1 min)
   Recall a minor frustration. Ask, in order: “Where is dukkha here? What origin is operating? What would cessation be? What path step now?” Name one step (e.g., right mindfulness).

2. Vedanā→Label→Loosen (2 min)
   Sit with a fresh sensation. Label its tone (pleasant/neutral/painful). Whisper: “vedanā felt.” Notice the urge. Name it “taṇhā” (to get, to push, to fog). Exhale slowly; soften jaw/chest/hands. Re-label: “cooling.”

3. Craving Map (3 min, pair or solo)
   List the six taṇhā doors (form, sound, odor, taste, touch, idea). Circle your top two this week. For each, write one cooling cue (e.g., “Sip water before clicking ‘Buy’,” “Count three breaths before replying”).

D. Cross-links

• Ch02 Four Periods (locating avijjā in Past Cause; taṇhā in Present Cause).

• Ch03 Three Rounds (kilesa→kamma→vipāka hand-offs).

• Ch10 Saṅkhārā (what ignorance fabricates).

• Ch15 Vedanā (six feelings; the live hinge).

• Ch16 Taṇhā (types and strategies to cool escalation).

• Ch18 Bhava (how craving + clinging solidify becoming).

Sources

SN 12.1; SN 12.2.

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QR Footer (left → right)

• Audio QR-CH04-AUD1 — “Two Roots in daily life” (3-min). (Alt: “QR to audio: avijjā & taṇhā overview”)

• Video QR-CH04-VID1 — Spotting C2: Vedanā→Taṇhā (5-min). (Alt: “QR to video: C2 tipping-point demo”)

• Slides QR-CH04-PPT1 — Two Roots teaching deck. (Alt: “QR to slides: Two Roots deck”)

• Prompt QR-CH04-PRM1 — 60-sec Vedanā→Loosen script. (Alt: “QR to prompt: one-minute cooling”)

Next: Ch05 — Two Truths (Sacca): Dukkha & Samudaya.