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Unitive Knowledge Society

Publisher of Metanoia, Journal of Unitive Knowledge

An exploration of humanity’s search for ultimate reality.

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Volume I · Issue INovember 2026

Beginnings

The first issue asks what unitive knowledge is, and reads the Chāndogya Upaniṣad alongside Plotinus.

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Metanoia is free to read and free to download.

  1. 1What Is Unitive Knowledge?The Editors6 minute read
  2. 2The One and BrahmanThe Editors8 minute read
  3. 3That Thou ArtThe Editors7 minute read

Essays

Selected writing from Metanoia.
All essays

Editorial

What Is Unitive Knowledge?

Unitive knowledge is not a doctrine that all religions are the same. It is a question about a kind of knowing that many traditions describe, and about how far their descriptions agree.

The Editors, 6 minute read

  • Study

    The One and Brahman

    Plotinus and Śaṅkara never read each other, yet both describe a first principle beyond ordinary predication. The resemblance is striking; so is the difference.

    The Editors, 8 minute read

What is unitive knowledge?

Unitive knowledge is the study of how humanity has understood ultimate reality, and whether beneath the diversity of traditions there are real convergences, and real disagreements.
Read the introduction

The Great Questions

Questions every tradition has had to answer. Each opens onto essays, thinkers and texts.
All questions

Traditions

Each on its own terms: history, thinkers, texts, and where it meets and differs from others.
All traditions
  • Vedānta

    The schools of Indian philosophy that interpret the Upaniṣads, the Brahma Sūtras and the Bhagavad Gītā.

  • Buddhism

    The traditions that follow the teaching of the Buddha on suffering and its cessation.

  • Daoism

    The Chinese philosophical and religious tradition of the Dao, the Way.

  • Early Greek Philosophy

    The Greek thinkers before Socrates, who first asked what single source and order underlie the many things of the world.

  • Neoplatonism

    The late ancient Platonism of Plotinus and his successors, centred on the One and the soul’s return to it.

  • Rhineland Mysticism

    The mystical movement of the fourteenth-century Rhine valley and Low Countries: Eckhart, Tauler, Suso and Ruusbroec.

  • Sufism

    The mystical dimension of Islam, centred on the remembrance and love of God.

  • Huayan

    The Chinese Buddhist school of the Flower Garland Sūtra, which teaches that all things contain and reflect one another.

Authors

Thinkers across three thousand years.
All authors

Concepts

An encyclopedia of the ideas the traditions share and dispute.
All concepts

Reading lists

Structured sequences through the primary texts.
All reading listsThe book catalogue
  • Begin Here

    beginning5 steps

    An introduction to unitive philosophy in five steps.

  • The Rhineland Mystics

    intermediate6 steps

    Eckhart, Tauler and Ruusbroec, and their heir Nicholas of Cusa: the birth of God in the ground of the soul.

  • Persian Mystical Poetry

    beginning5 steps

    ʿAṭṭār, Rūmī and Ḥāfiẓ: the journey, the reed-flute and the tavern, three masters of the Sufi poetry of love.

  • Grace and Effort

    intermediate7 steps

    Pure Land Buddhism and the Śrī Vaiṣṇava theology of surrender: two traditions that ask what the self can do.

About the Society

Metanoia is published by the Unitive Knowledge Society.
About the Society