Dion Fortune's The Secrets of Dr Taverner

This collection of short stories revolves round a magician who helps the insane. Through soul-swapping and journeys into other dimensions, he frees his patients from mental torment. Each story conatins a message concerning the tremendous power of magic and the uses and abuses of that power. Dion Fortune is the author of several occult novels, including The Demon Lover, The Sea Priestess, Moon Magic and The Winged Bull, as well as several non-fiction studies of the occult.