Born Dec. 6, 1875, Wolverhampton, Staffordshire, Eng.
Died June 15, 1941, London

English mystical poet and author of the seminal work Mysticism, along with The Mystic Way and Worship, helped to establish mysticism as a branch of theology in acedemia.

In Mysticism, Underhill outlines five stages of spiritual development: Awakening, Purgation, Illumination, Dark Night of the Soul, and Union.