Free Transpersonal and Spiritual Books

Browse and read classic books on spirituality

Discover Classic Books on Transpersonal Topics


The Internet Archive (archive.org) provides free access to hundreds of classic books on religion, religious experience, spirituality, mythology, metaphysical philosophy and psychology.


For your convenience, we have gathered together more than 280 of those that we consider most relevant to the history and study of the transpersonal, arranged in alphabetical order by author.


Here you will find classics of religious philosophy (East and West), metaphysics, mysticism, mythology, comparative religion, esotericism, spiritualism, theosophy, psychical research, new thought, and humanistic, existential and transpersonal psychology.


Click on the VIEW buttons to open each book for immediate inspection and reading.


You can also click on the archive.org links to download the books to your own ebook collection.




Abelson, Joshua (1873-1940)


Jewish Mysticism (1913)


Assagioli, Roberto (1888-1974)

Wikipedia

Some Collected Works of Dr Roberto Assagioli, M.D. [Compiled by Philippe de Coster, 2010]


Atkinson, William Walker [aka Theron Q. Dumont; Yogi Ramacharaka] (1862-1932)

Wikipedia

The Law of the New Thought: A Study of Fundamental Principles and Their Application (1902)

Fourteen Lessons in Yogi Philosophy and Oriental Occultism [as Yogi Ramacharaka] (1904)

A Series of Lessons in Gnani Yoga [as Yogi Ramacharaka] (1906)

The Inner Consciousness (1908)

The Life Beyond Death [as Yogi Ramacharaka] (1909)

Mental Therapeutics [as Theron Q. Dumont] (1916)

Power of Concentration [as Theron Q. Dumont] (1918)

Augustine, St. (354-430)

Wikipedia

The Confessions of St. Augustine (397-400)


Aurobindo, Sri [Aurobindo Ghose] (1872-1950)

Wikipedia

The Life Divine (1947)

The Synthesis of Yoga (1955)

A Practical Guide to Integral Yoga (1959)


Avalon, Arthur [Sir John Woodroffe] (1865-1936)

Wikipedia

The Great Liberation (1913)

Principles of Tantra (1914)

Sakti and Sakta (1918)

The Serpent Power (1919)


Bahá'u'lláh (1817-1892)

Wikipedia

Gleanings from the Writings of Bahá'u'lláh (2005)

The Hidden Words of Bahá'u'lláh (2005)

The Proclamation of Bahá'u'lláh (2005)


Bergson, Henri (1859-1941)

Wikipedia

Creative Evolution (1911)

Dreams (1914)

Mind-Energy: Lectures and Essays (1920)


Besant, Annie Wood (1847-1933)

Wikipedia

Annie Besant: An Autobiography (1897)

Death -- And After? [Theosophical Manuals, No. 3] (1893)

The Ancient Wisdom: An Outline of Theosophical Teachings (1897)

An Introduction to Yoga (1908)

Popular Lessons on Theosophy (1912)

The Spiritual Life (1912)

Psychology (1919)


Blavatsky, Helena Petrovna (1831-1891)

Wikipedia

Isis Unveiled: A Master-Key to the Mysteries of Ancient and Modern Science and Theology: Vol. I. Science (1877)

Isis Unveiled: A Master-Key to the Mysteries of Ancient and Modern Science and Theology: Vol. II. Theology (1877)

The Secret Doctrine: The Synthesis of Science, Religion, and Philosophy. Volume I: Cosmogenesis (1888)

The Secret Doctrine: The Synthesis of Science, Religion, and Philosophy.  Volume II: Anthropogenesis (1888)

The Secret Doctrine: The Synthesis of Science, Religion, and Philosophy.  Volume III (1893)

The Secret Doctine: The Synthesis of Science, Religion, and Philosophy.  Index to Vols. I, II and III (1895)

From the Caves and Jungles of Hindostan (1892)

The Theosophical Glossary (1918)

Brinton, Daniel Garrison (1837-1899)

Wikipedia

The Religious Sentiment: Its Source and Aim (1876)

Bucke, Richard Maurice (1837-1902)

Wikipedia

Man's Moral Nature: An Essay (1879)

Cosmic Consciousness: A Study in the Evolution of the Human Mind (1901)

Bulfinch, Thomas (1796-1867)

Wikipedia

Bulfinch's Mythology (1913)

Bunyan, John (1628-1688)

Wikipedia

The Pilgrim's Progress (1678/1903)

Campbell, Joseph (1904-1987)

Wikipedia

The Hero with a Thousand Faces (1949)

The Masks of God. Vol I. Primitive Mythology (1959)

The Masks of God. Vol II. Oriental Mythology (1962)

Cohen, Chapman (1868-1954)

Wikipedia

Religion & Sex: Studies in the Pathology of Religious Development (1919)

Dalai Lama, H.H. [Tenzin Gyatso] (1935- )

Wikipedia

The Way to Freedom (1994)

Descartes, René (1596-1650)

Wikipedia

The method, meditations and philosophy of Descartes (Trans. John Veitch, 1901)

Dresser, Horatio Willis (1866-1954)

Wikipedia

A History of the New Thought Movement (1919)

Durkheim, Émile (1858-1917)

Wikipedia

The Elementary Forms of the Religious Life: A Study in Religious Sociology (1912)

Eliade, Mircea (1907-1986)

Wikipedia

Cosmos and History:The Myth of the Eternal Return (1954)

Patterns in Comparative Religion (1958)

Rites and Symbols of Initiation (1958)

A History of Religious Ideas. Vol 1: From the Stone Age to the Eleusinian Mysteries (1978)

A History of Religious Ideas. Vol 2: From Gautama Buddha to the Triumph of Christianity (1982)

A History of Religious Ideas. Vol 3: From Muhammad to the Age of Reforms (1985)

Eliot, Charles (1862-1931)

Wikipedia

Hinduism and Buddhism: An Historical Sketch. Vol. I (1921)

Hinduism and Buddhism: An Historical Sketch. Vol. II (1921)

Hinduism and Buddhism: An Historical Sketch. Vol. III (1921)

Evans-Wentz, Walter Yeeling (1878-1965)

Wikipedia

The Tibetan Book of the Dead (1927)

Tibetan Yoga and Secret Doctrines (1935)

Frankl, Viktor E. (1905-1997)

Wikipedia

Man's Search for Meaning (1946/1984)

Frazer, James George (1854-1941)

Wikipedia

The Golden Bough: A Study in Magic and Religion. Vol. I (1900)

The Golden Bough: A Study in Magic and Religion. Vol. II (1900)

The Golden Bough: A Study in Magic and Religion. Vol. III (1900)

Freud, Sigmund (1856-1939)

Wikipedia

The Interpretation of Dreams (1913)

Totem and Taboo: Resemblances Between the Psychic Lives of Savages and Neurotics (1918)

The Future of an Illusion (1927/1961)

Civilization and its Discontents (1930)

Guenther, Herbert Vighnāntaka (1917-2006) & Trungpa, Chögyam (1939-1987)

Wikipedia

The Dawn of Tantra (1975)

Gurney, Edmund (1847-1888)

Wikipedia

Phantasms of the Living, Volume I [with Frederic W.H. Myers and Frank Podmore] (1886)

Phantasms of the Living, Volume II [with Frederic W.H. Myers and Frank Podmore] (1886)

Hartshorne, Charles (1897-2000)

Wikipedia

Beyond Humanism: Essays in the New Philosophy of Nature (1937)

The Divine Relativity: A Social Conception of God (1948)

Heindel, Max (1865-1919)

Wikipedia

The Rosicrucian Cosmo-Conception: Or Christian Occult Science (1910)

The Rosicrucian Mysteries: An Elementary Exposition of Their Secret Teachings (1911)

The Rosicrucian Philosophy in Questions and Answers (1922)

Hesse, Hermann (1877-1962)

Wikipedia

Siddhartha: An Indian Tale (1922)

Huxley, Aldous (1894-1963)

Wikipedia

The Perennial Philosophy (1945)

The Doors of Perception (1954)

Hyslop, James Hervey (1854-1920)

Wikipedia

Borderland of Psychical Research (1906)

Contact with the Other World: The Latest Evidence as to Communication with the Dead (1919)

Enigmas of Psychical Research (1906)

Life After Death: Problems of the Future Life and its Nature (1918)

Psychical Research and Survival (1913)

Psychical Research and the Resurrection (1908)

Science and a Future Life (1905)

Ignatius of Loyola, St. (1491-1556)

Wikipedia

The Spiritual Exercises of St. Ignatius of Loyola (Trans. Charles Seager, 1847)

The Autobiography of St. Ignatius (Ed. Joseph F.X. O'Conor, 1900)

Inge, William Ralph (1860-1954)

Wikipedia

Christian Mysticism (1899)

Light, Life and Love: Selections from the German Mystics of the Middle Ages (1904)

Jacobi, Jolande (1890-1973)

Wikipedia

The Psychology of C.G. Jung: An Introduction with Illustrations (1942/1951)

James, William (1842-1910)

Wikipedia

The Will to Believe, and Other Essays in Popular Philosophy (1897)

Human Immortality: Two Supposed Objections to the Doctrine (1898)

Varieties of Religious Experience: A Study in Human Nature (1902)

Pragmatism: A New Name For Some Old Ways of Thinking (1907)

A Pluralistic Universe: Hibbert Lectures (1909)

Some Problems of Philosophy: A Beginning of an Introduction to Philosophy (1911)

Essays in Radical Empiricism (1912)

Jastrow, Morris (1861-1921) & Clay, Albert Tobias (1866-1925)

Wikipedia

An Old Babylonian Version of the Gilgamesh Epic (1920)

John of the Cross, St. (1542-1591)

Wikipedia

The Dark Night of the Soul (Trans. Gabriela Cunninghame Graham, 1905)

A Spiritual Canticle of the Soul and the Bridegroom Christ (Trans. David Lewis, 1919)

Johnston, Charles (1867-1931)

Wikipedia

The Yoga Sutras of Patanjali: The Book of the Spiritual Man (1912)

Julian of Norwich (c.1342-c.1416)

Wikipedia

Revelations of Divine Love (1902)

Jung, Carl Gustav (1875-1961)

Wikipedia

Psychological Types (1923)

Two Essays on Analytical Psychology (1928)

Contributions to Analytical Psychology (1928)

Modern Man in Search of a Soul (1933)

Psychiatric Studies (1945)

Essays on Contemporary Events (1947)

Man and His Symbols (1964/1988)

Kant, Immanuel (1724-1804)

Wikipedia

Dreams of a Spirit-Seer (1766, Trans. Emanuel F. Goerwitz, 1900)

Critique of Pure Reason (1781, Trans. Norman Kemp Smith, 1929)

Critique of Practical Reason (1788, Trans. Thomas Kingsmill Abbott, 1898)

Kardec, Allan [Hippolyte Léon Denizard Rivail] (1804-1869)

Wikipedia

Experimental Spiritism: Book on Mediums; Or, Guide for Mediums and Invocators (1874)

Spiritualist Philosophy: The Spirits' Book. Containing the Principles of Spiritist Doctrine (1893)

Koestler, Arthur (1905-1983)

Wikipedia

The Ghost in the Machine (1967)

Krishnamurti, Jiddu (1895-1986)

Wikipedia

At the Feet of the Master [as Alcyone] (1910)

Education as Service [as Alcyone] (1912)

The Wholeness of Life: Dialogues with physicist David Bohm and psychiatrist David Shainberg (1978)

Can Humanity Change?: J. Krishnamurti in Dialogue with Buddhists (2003)

Lakshmi Narasu, Pokala (c.1846-1934)


The Essence of Buddhism (1907)

Lang, Andrew (1844-1912)

Wikipedia

Myth, Ritual and Religion, Vol. I (1887)

Myth, Ritual and Religion, Vol. II (1887)

Lawrence, David Herbert (1885-1930)

Wikipedia

Psychoanalysis and the Unconscious (1921)

Fantasia of the Unconscious (1922)

Leadbeater, Charles Webster (1854-1934)

Wikipedia

The Astral Plane: Its Scenery, Inhabitants, and Phenomena (1896)

An Outline of Theosophy (1902)

The Inner Life (1911)

A Textbook of Theosophy (1912)

The Life After Death, and How Theosophy Unveils It (1912)

Leary, Timothy (1920-1996)

Wikipedia

The Politics of Ecstasy (1968)

High Priest (1968/1995)

Confessions of a Hope Fiend (1973)

The Game of Life (c.1979)

Change Your Brain (1988)

Your Brain is God (1988)

Start Your Own Religion (2005)

Legge, James (1815-1897)

Wikipedia

The Sacred Books of China: The Texts of Confucianism. Part I (1879)

The Sacred Books of China: The Texts of Confucianism. Part II [The Yi King] (1885)

The Sacred Books of China: The Texts of Confucianism. Part III (1885)

The Sacred Books of China: The Texts of Confucianism. Part IV (1885)

The Sacred Books of China: The Texts of Taoism. Part I [includes Tao Teh King] (1891)

MacIntyre, Alasdair Chalmers (1929- )

Wikipedia

After Virtue: A Study in Moral Theory (1981)

Maslow, Abraham Harold (1908-1970)

Wikipedia

Motivation and Personality (1954/1970)

The Farther Reaches of Human Nature (1971)

May, Rollo (1909-1994)

Wikipedia

The Meaning of Anxiety (1950)

Symbolism in Religion and Literature (Ed. Rollo May, 1960)

McIvor-Tyndall, Alexander James [aka Ali Nomad] (1870-1940)


Cosmic Consciousness: The Man-God whom we Await [as Ali Nomad] (1913)

Menzies, Allan (1845-1916)


History of Religion: A Sketch of Primitive Religious Beliefs and Practices, and of the Origin and Character of the Great Systems (1895)

The Religions of India: Brahmanism and Buddhism (1903)

Mercer, John Edward (1857-1922)

Wikipedia

Nature Mysticism (1913)

Müller, Friedrich Max (1823-1900)

Wikipedia

Introduction to the Science of Religion [Four Royal Institution lectures with two essays] (1873)

Lectures on the Origin and Growth of Religion: As Illustrated by the Religions of India [Hibbert Lectures] (1878)

Natural Religion [Gifford Lectures] (1888/1892)

Physical Religion [Gifford Lectures] (1890/1891)

Anthropological Religion [Gifford Lectures] (1892)

Theosophy, or Psychological Religion [Gifford Lectures] (1892/1895)

The Upanishads [Trans. F. Max Muller] Part I (1879)

The Upanishads [Trans. F. Max Muller] Part II (1884)

The Dhammapada [Trans. F. Max Muller] (1881)

Murray, Margaret (1863-1963)

Wikipedia

The Witch-cult in Western Europe: A Study in Anthropology (1921)

Myers, Frederic William Henry (1843-1901)

Wikipedia

Human Personality and its Survival of Bodily Death, Vol. I (1903)

Human Personality and its Survival of Bodily Death, Vol. II (1903)

Nicholson, Reynold Alleyne (1868-1945)

Wikipedia

The Mystics of Islam (1914)

Studies in Islamic Mysticism (1921)

Otto, Rudolf (1869-1937)

Wikipedia

Naturalism and Religion (Trans. J. Arthur Thomson, 1907)

The Philosophy of Religion Based on Kant and Fries (1909, Trans. E.B. Dicker, 1931)

The Idea of the Holy (Trans. John W. Harvey, 1923/1950)

The Original Gita: The Song of the Supreme Exalted One (Trans. J.E. Turner, 1939)

Paramahansa Yogananda (1893-1952)

Wikipedia

Autobiography of a Yogi (1946)

Man's Eternal Quest and Other Talks (1957)

Plato (c.425-c.348 BCE)

Wikipedia

Euthyphro, The Apology, Crito, Phaedo, Phaedrus (Trans. Harold North Fowler, 1914)

The Republic. Vol. I. (Trans. Paul Shorey, 1937)

The Republic. Vol. II. (Trans. Paul Shorey, 1937)

Podmore, Frank (1856-1910)

Wikipedia

Apparitions and Thought Transference: An Examination of the Evidence for Telepathy (1894)

Mesmerism and Christian Science: A Short History of Mental Healing (1909)

Modern Spiritualism: A History and a Criticism, Vol. I (1902)

Modern Spiritualism: A History and a Criticism, Vol. II (1902)

Studies in Psychical Research (1897)

Telepathic Hallucinations: The New View of Ghosts (1909)

The Naturalisation of the Supernatural (1908)

The Newer Spiritualism (1911)

Quimby, Phineas Parkhurst (1802-1866)

Wikipedia

The Quimby Manuscripts (Ed. Horatio Willis Dresser, 1921)

Ramana Maharshi (1879-1950)

Wikipedia

Talks with Sri Ramana Maharshi (1955/2005)

Ramanuja (trad. 1017-1137)

Wikipedia

See Thibaut, George Frederick William

Regardie, Francis Israel (1907-1985)

Wikipedia

The Golden Dawn: An Account of the Teaching, Rites and Ceremonies of the Order of the Golden Dawn. Vol. 1 (1937)

The Golden Dawn: An Account of the Teaching, Rites and Ceremonies of the Order of the Golden Dawn. Vol. 2 (1938)

The Golden Dawn: An Account of the Teaching, Rites and Ceremonies of the Order of the Golden Dawn. Vol. 3 (1939)

The Golden Dawn: An Account of the Teaching, Rites and Ceremonies of the Order of the Golden Dawn. Vol. 4 (1940)

The Middle Pillar: The Balance Between Mind and Magic (1938/2004)

The Tree of Life: A Study in Magic (1968)

Foundations of Practical Magic: An Introduction to Qabalistic, Magical and Meditative Techniques (1979)

The Golden Dawn (6th Edition, Revised and enlarged, 1986)

Rogers, Carl R. (1902-1987)

Wikipedia

Counseling and Psychotherapy: Newer Concepts in Practice (1942)

Russell, Bertrand (1872-1970)

Wikipedia

The Problems of Philosophy (1912)

Mysticism and Logic and Other Essays (1917)

History of Western Philosophy (1947)

Scholem, Gershom (1897-1982)

Wikipedia

On the Kabbalah and Its Symbolism (1960)

Origins of the Kabbalah (1967)

Scott, William Major (??-??)


Aspects of Christian Mysticism (1907)

Shankaracharya (788-820)

Wikipedia

The Bhagavad-Gita with the Commentary of Sri Shankaracharya (Trans. Alladi Mahadevi Sastry, 1897)

See also: Thibaut, George Frederick William

Smart, Ninian (1927-2001)

Wikipedia

Doctrine and Argument in Indian Philosophy (1964)

The Yogi and the Devotee: The Interplay Between the Upanishads and Catholic Theology (1968)

Buddhism and Christianity: Rivals and Allies (1993)

Smith, Huston (1919-2016)

Wikipedia

Forgotten Truth: The Common View of the World's Religions (1976)

Why Religion Matters: The Fate of the Human Spirit in an Age of Disbelief (2001)

Smith, Margaret (1884-1970)

Wikipedia

Studies in Early Mysticism in the Near and Middle East (1931/1995)

Soothill, William Edward (1861-1935)

Wikipedia

The Analects of Confucius (1910)

Stace, Walter Terence (1886-1967)

Wikipedia

The Teachings of the Mystics (1960)

Mysticism and Philosophy (1960)

Suzuki, Daisetz Teitaro (1870-1966)

Wikipedia

Essays in Zen Buddhism [First Series] (1927)

Essays in Zen Buddhism [Second Series] (1933)

Essays in Zen Buddhism [Third Series] (1934)

The Zen Doctrine of No-Mind (1949)

Manual of Zen Buddhism (1950)

Studies in Zen (1955)

Swedenborg, Emanuel (1688-1772)

Wikipedia

Heaven and Its Wonders and Hell, from Things Heard and Seen (1758, trans. 1905)

Of the New Jerusalem and Its Heavenly Doctrine (1758, trans. 1829)

Concerning the Earths in Our Solar System (1758, trans. 1839)

Angelic Wisdom Concerning the Divine Love and the Divine Wisdom (1763, trans. 1915)

Angelic Wisdom Concerning the Divine Providence (1764, trans. 1840)

The Apocalypse Revealed Vol. I (1766, trans 1883)

The Apocalypse Revealed Vol. II (1766, trans 1887)

On the Intercourse Between the Soul and the Body (1769, trans. 1848)

The Gist of Swedenborg (Compiled by Julian K. Smyth and William F. Wunsch, 1920)

Szasz, Thomas (1920-2012)

Wikipedia

The Myth of Mental Illness: Foundations of a Theory of Personal Conduct (1961/1974)

Teilhard de Chardin, Pierre (1881-1955)

Wikipedia

The Heart of Matter (1950)

The Phenomenon of Man (1955)

Man's Place in Nature: The Human Zoological Group (1956)

The Divine Milieu: An Essay on the Interior Life (1957)

The Future of Man (1964)

Let Me Explain (1966)

On Love and Happiness (1966/1967)

Teresa of Ávila, St. (1515-1582)

Wikipedia

The life of St. Teresa of Jesus, of the Order of Our Lady of Carmel (Trans. David Lewis, 1916)

The Interior Castle, or The Mansions (Trans. Prior Zimmerman, 1921)

Thibaut, George Frederick William (1848-1914)

Wikipedia

The Vedanta Sutras (Trans. George Thibaut) Part I, with the Commentary of Shankarakarya (Trans. 1896)

The Vedanta Sutras (Trans. George Thibaut) Part II, with the Commentary of Shankarakarya (Trans. 1896)

The Vedanta Sutras (Trans. George Thibaut) Part III, with the Commentary of Ramanuga (Trans. 1904)

Thích Nhất Hạnh (1926- )

Wikipedia

Zen Keys (Trans. 1974)

The Miracle of Mindfulness (1975)

The Heart of the Buddha's Teaching (1998)

No Death, No Fear: Comforting Wisdom for Life (2002)

Being Peace (2005)

The Art of Power (2007)

Thomas à Kempis (1380-1471)

Wikipedia

Of the Imitation of Christ (1903)

Thomas Aquinas, St. (1225-1274)

Wikipedia

The 'Summa Theologica' of St. Thomas Aquinas, Part I. (Trans. 1912)

On Prayer and the Contemplative Life (by Hugh Pope, 1914)

An Introduction to the Metaphysics of St. Thomas Aquinas (Trans. James F. Anderson, 1953)

Trungpa, Chögyam (1939-1987)

Wikipedia

Born in Tibet (1966/1995)

See also Guenther, Herbert Vighnāntaka

Underhill Evelyn (1875-1941)

Wikipedia

Mysticism: A Study of the Nature and Development of Man's Spiritual Consciousness (1912)

The Mystic Way: A Psychological Study in Christian Origins (1913)

Practical Mysticism: A Little Book for Normal People (1914)

The Essentials of Mysticism and Other Essays (1920)

Man and the Supernatural (1927)

Various


The Oxford Book of English Mystical Verse (1917)

Vivekananda, Swami (1893-1902)

Wikipedia

Address on Vedanta Philosophy: The Ideal of a Universal Religion (1896)

Addresses on the Vedanta Philosophy: Bhakti Yoga (1896)

Vedanta Philosophy: Lectures on Karma Yoga (1896)

Vedanta Philosophy: Lectures on Raja Yoga (1896)

Vedanta Philosophy: Lectures on Jnana Yoga (1902)

Wallis Budge, Ernest Alfred Thompson (1857-1934)

Wikipedia

The Book of the Dead [Egyptian] (1895/1909)

Egyptian Magic (1899)

The Gods of the Egyptians, or Studies in Egyptian Mythology. Vol. I (1904)

The Gods of the Egyptians, or Studies in Egyptian Mythology. Vol. II (1904)

The Egyptian Heaven and Hell. Vol. I (1905-1906)

The Egyptian Heaven and Hell. Vol. II (1905-1906)

The Egyptian Heaven and Hell. Vol. III (1905-1906)

Legends of the Gods (1912)

The Literature of the Ancient Egyptians (1914)

Watts, Alan (1915-1973)

Wikipedia

The Philosophies of Asia (1995)

The Spirit of Zen: A Way of Life, Work and Art in the Far East (1936)

The Book on the Taboo Against Knowing Who You Are (1969)

Weber, Max (1864-1920)

Wikipedia

The Religion of China: Confucianism and Taoism (Trans. 1951)

The Sociology of Religion (Trans. 1956)

The Religion of India: The Sociology of Hinduism and Buddhism (Trans. 1958)

Whitehead, Alfred North (1861-1947)

Wikipedia

Process and Reality: An Essay on Cosmology (1929/1978)

Wilber, Ken (1949- )

Wikipedia

Grace and Grit (1991/2001)

A Summary of My Psychological Model (or, Outline of an Integral Psychology) (2006)

Wood, Ernest Egerton (1883-1965)

Wikipedia

Natural Theosophy (1930)

Seven Schools of Yoga: An Introduction (1931/1976)

Concentration: An Approach to Meditation (1949)

The Glorious Presence (1952)

Great Systems of Yoga (1954)

Woods, James Haughton (1864-1935)


The Yoga-System of Patañjali (1914)

Zaehner, Robert Charles (1913-1974)

Wikipedia

Mysticism: Sacred and Profane (1957)