Psychoanalysis.
The word is mightily suggestive. It is the name of a treatment for nervous diseases, based on the theory that they are caused by the warring of two personalities within one.
One of these personalities is the conscious one; we know we are it. The other is the unconscious or subconscious one; we do not know that we are it.
When these two personalities are in harmony, all is well in our soul house, and the world is bright. When they are at odds with each other,-gloom, worry, fear, sulks, jealousy, suspicions, moodiness, insomnia, melancholy, insanity!
I do not know how the psychoanalysts go to work to bring these personalities into harmony; but I am inclined to think there must be much in the theory, it fits in so well with what I read long ago in a certain wise old volume about the two laws in my members, warring together and bringing me into captivity.
If Paul were living to-day, perhaps they would call him a psychoanalyst. Who knows?