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The Seed of Reasoning: Notes on the Five Great Logical Arguments of the Middle Way

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A short zin bris (notes; rigs pa’i sa bon, “The Seed of Reasoning”) on the Five Great Reasonings (gtan tshigs chen po lnga) by Jamyang Khyentse Wangpo (འཇམ་དབྱངས་མཁྱེན་བརྩེའི་དབང་པོ་, 1820–1892), the Sakya master and co-founder of the Rimé (non-sectarian) movement. Adam Pearcey translated it for Lotsawa House in 2018, working from the gsung ‘bum (BDRC W21807, vol. 6: 180–184). The Tibetan title is dbu ma’i gtan tshigs chen po rnam pa lnga las brtsams pa’i zin bris rigs pa’i sa bon.

This is a teaching aide-mémoire rather than an interpreter’s treatise, and its content sits naturally alongside the Five Great Reasonings concept page.

Thesis / main argument

The work is not an argumentative treatise but a compact pedagogical enumeration. The five reasonings appear in fixed order, each given a single paragraph built as a formal debate-syllogism: thesis, reason, example. Its organising claim is the standard division of labour between the reasonings. The first four overcome the extreme of reification (སྒྲོ་འདོགས་, superimposing existence); the fifth, Great Interdependence, overcomes the extreme of denial (སྐུར་པ་འདེབས་པ་, deprecating phenomena as non-existent). The text closes by collapsing the whole toolkit into a single function. Since no phenomenon has any real nature, “there is nothing to be refuted,” and the reasonings come into play only when an opponent superimposes true existence — at which point any one of them suffices.

Key claims

  • The five, in fixed order (matching the wiki’s standard enumeration): (1) investigation of the cause — the Diamond Splinters (rdo rje gzegs ma); (2) investigation of the result — refuting existent or non-existent effects; (3) investigation of both — refuting the four permutations of arising; (4) investigation of essential identity — neither one nor many; (5) Great Interdependence.
  • Two-extremes division of labour (opening section): the first four address the reification-extreme; the fifth addresses the denial-extreme. This is framed differently from the wiki’s current rationale for interdependence being the king of reasonings, which credits it with refuting both extremes.
  • Each reasoning is cast as an autonomous syllogism with a worldly example: “Take [the subject]. It follows that it is unreal, because … like a dream / a reflection / the moon in water.” The translator’s note (n. 2) makes this explicit: “For each of the five arguments Jamyang Khyentse offers a syllogism in the formal language of debate, complete with thesis, reason and example.”
  • Textual loci cited for each reasoning:
    • Cause / Diamond Splinters → Mūlamadhyamakakārikā I.1.
    • Result → Mūlamadhyamakakārikā I.6 (“Whether for existent or non-existent things, a contributive condition would be invalid”).
    • Four permutations → Jñānagarbha’s Satyadvayavibhaṅga (“The Two Truths”) v. 14, a textual attribution the concept page previously lacked for this reasoning.
    • Neither one nor many → Madhyamakālaṅkāra (“Since they lack a true identity as singular or multiple, things are without inherent nature”).
    • Great Interdependence → Mūlamadhyamakakārikā XXIV.18, reinforced by the Anavataptanāgarājaparipṛcchā Sūtra (Questions of the Nāga King Anavatapta).
  • The illusion (māyā) example for interdependence: conjured horses and oxen, produced by sticks and mantras, appear without any actual horse or ox being present. Likewise all phenomena, “from mountains to ordinary men and women,” are nothing more than accumulations of atoms and momentary, hence empty of substance while appearing unceasingly. “The unity of appearance and emptiness” is named as the path of the Middle Way.
  • Convergent-toolkit conclusion: nothing is to be refuted in itself; the reasonings are triggered only by an opponent’s “fixation on true reality,” and any one of them is then sufficient.

Methodology

This is traditional Tibetan scholastic man ngag / zin bris compression: doctrine stated as settled, grounded in verse citations, deployed through formal syllogism. One feature is worth drawing out. Although Jamyang Khyentse belongs to the Sakya/Rimé orbit, and the ekānekaviyoga he gives is the Śāntarakṣita reasoning, he presents the arguments in the autonomous-syllogism (svatantra) format — thesis, reason, example — rather than as bare prasaṅga consequences. This is the formal-probative deployment, not the consequentialist one.

Notable quote

“any of the reasonings outlined above would be sufficient to pulverize the assertion” (Pearcey trans.)

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