I have treated many hundreds of patients. Among those in the second half of life - that is to say, over 35 - there has not been one whose problem in the last resort was not that of finding a religious outlook on life. It is safe to say that every one of them fell ill because he had lost that which the living religions of every age have given their followers, and none of them has really been healed who did not regain his religious outlook.
C.G. Jung, Modern Man in Search of a Soul
adulthood, jung, psychology, religion