Ocean of Reasoning
A Great Commentary on Nāgārjuna's Mūlamadhyamakakārikā — Tsongkhapa's c. 1407 verse-by-verse exposition of the Madhyamaka view
Tradition: Tibetan Vajrayāna Buddhism / Gelug Madhyamaka
A verse-by-verse defense of Prāsaṅgika Madhyamaka — Nāgārjuna through Candrakīrti, against alternative Tibetan readings
Tsongkhapa's c. 1407 great commentary on Nāgārjuna's Mūlamadhyamakakārikā (c. 150 CE), the foundational text of Madhyamaka philosophy. Verse-by-verse commentary running to many hundreds of pages — Tsongkhapa's most extensive philosophical engagement with Madhyamaka. Central commitment is to the Prāsaṅgika interpretation descending through Candrakīrti, against Svātantrika alternatives. Develops Tsongkhapa's characteristic positions: conventional/ultimate truth distinction, empty nature of all phenomena as dependent arising, rejection of any self-existent ultimate reality, careful preservation of conventional truths within ultimate analysis. Principal Tibetan-language source for Gelug Madhyamaka.
Author
Editions cited
- Ocean of Reasoning (c. 1407); English trans. Geshe Ngawang Samten and Jay L. Garfield, Ocean of Reasoning (Oxford UP, 2006)
School Embodiments
The principal Gelug-school philosophical commentary on Madhyamaka.
"The Mūlamadhyamakakārikā is the root text of all that is profound in Buddhist philosophy." (Ocean of Reasoning, prologue)
Major contribution to Mahāyāna philosophy engaging Nāgārjuna, Āryadeva, Buddhapālita, Candrakīrti, Śāntideva.
"All phenomena are empty of inherent existence — this is the heart of the teaching." (Ocean of Reasoning, ch. 1)
Rationalist in the high-Buddhist sense: careful logical analysis applied to demanding philosophical questions.
"The reasoning that establishes emptiness must be followed precisely." (Ocean of Reasoning)
Specific Buddhist realism: conventional truths real at their level.
"Conventional things really exist conventionally; to deny this is to fall into nihilism." (Ocean of Reasoning)
Method has structural similarities to analytic philosophy; read with profit by contemporary analytic Buddhist philosophers.
"In analysing whether self-existent essence is possible, we must consider every candidate property." (Ocean of Reasoning)
Dependent origination has substantial affinity with process-philosophical accounts.
"Whatever depends on conditions cannot have inherent existence." (Ocean of Reasoning)
Prāsaṅgika method of refuting positions without asserting alternatives — compared to Pyrrhonist epoché.
"The Madhyamika does not assert a thesis; he reduces every position to absurdity." (Ocean of Reasoning)
Mahayana-Buddhist tradition.
Madhyamaka tradition.
Internal Tensions
Tsongkhapa's reading is contested by Sakya, Nyingma, and Jonang schools — particularly the Jonangpa gzhan stong tradition arguing the empty-of-inherent-existence reading underweights positive accounts of ultimate reality.
I. Time
Nāgārjuna's 27 chapters as structure; timeless metaphysical truth of emptiness.
Attributes
II. Space
Dependent arising — relations rather than substances.
Attributes
III. Matter
Material phenomena as empty of inherent existence.
Attributes
IV. Observer
The Madhyamika analyst whose reasoning discloses emptiness.
Attributes
V. Energy
Intellectual energies of analytic reasoning grounded in meditative realisation.
Attributes
VI. Information
Nāgārjuna's verses; Tsongkhapa's systematic interpretive overlay.
Attributes
Personas with the nearest attribute fingerprint
Historical figures whose own classification on the same six-dimensional grid lands closest to this work's. Computed by attribute-agreement on coordinates both address.
Computed school proximity
The work's attribute fingerprint scored against all schools using the same quiz scorer. Useful as a sanity check on the hand-curated embodiments above.
How Ocean of Reasoning resolves each dilemma
47 resolved positions across 4 dimensions, including 32 distinctive where the majority of schools go the other way · 10 unaligned.
Each dimension is sorted so minority positions come first. Mainstream positions are folded into an expandable list.
Time · 9 dilemmas · 5 distinctive
Persistence, the future, and the direction of becoming.
4 mainstream positions
Matter · 7 dilemmas · 5 distinctive
What stuff is — fundamental, relational, or appearance.
Observer · 37 dilemmas · 5 distinctive
Mind, agency, and the knower's relation to the known.