Carl Jung correspondence with Bill W.

Bill W. (AA co-founder) letter to psychologist Carl Jung thanking him for his influence on those starting the AA movement.

if there was any other hope, you told him that there might be, provided he could become the subject of a spiritual or religious experience - in short, a genuine conversion.

http://silkworth.net/aahistory/billw_carljung012361.html
Jung’s response

An ordinary man, not protected by an action from above and isolated in society, cannot resist the power of evil, which is called very aptly the Devil.
Spiritus contra spiritum (spirit to defeat spirits)

http://silkworth.net/aahistory/carljung_billw013061.html