Bertrand Russell. The Analysis of Mind, London, 1921.

John Ruysbroeck. The Adornment of the Spiritual Marriage, the Book of Truth, and the Sparkling Stone, trans. from the Flemish by C.A. Wynschenk Dom. London, 1916.

—The Book of the XII Béguines, trans. by John Francis. London, 1913.

R. Semon. Die Mneme, 2nd ed. Leipzig, 1908.

Herbert Spencer. Education: Intellectual, Moral, and Physical London, 1861.

B.H. Streeter and A.J. Appasamy. The Sadhu: a Study in Mysticism and Practical Religion. London, 1921.

B.H. Streeter. (edited by). The Spirit: God and His Relation to Man. London, 1919.

Blessed Henry Suso. Life, by-Himself, trans. by T.F. Knox. London, 1913.

Devendranath Tagore. Autobiography, trans. by S. Tagore and I. Devi, London, 1914.

A.G. Tansley. The New Psychology and its Relation to Life London, 1920.