William James 
The Varieties of Religious Experience [PDF ebook] 
A Study In Human Nature

This is the celebratory centenary edition of this classic work, available in paperback for the first time in the Routledge Classics series

A classic scientific exploration of religious belief and a major work of twentieth century psychology

An essential purchase for readers of such recent titles as Richard Dawkins” The God Delusion

Supported by the simultaneous release of two other titles from C.G. Jung on religion and mysticism: Psychology and the Occult and Psychology and the East