The heart is always characteristic of feeling because feeling conditions influence the heart. Everywhere in the world feelings are associated with the heart. If you have no feelings, you have no heart; if you have no courage, you have no heart, because courage is a definite feeling condition. And you say, “Take it to heart.” Or you learn something “by heart.” You learn it, of course, by the head but you won’t keep it in mind unless you take it to heart. Only if you learn a thing by heart do you really get it. In other words, if it is not associated with your feelings, if it has not sunk into your body until it reaches the anahata center, it is so volatile that it flies away. It must be associated with the lower center in order to be kept. Therefore that method of teaching pupils that I described to you last week, where the teacher used the whip, in order that their feelings of anger and suffering would make the pupils remember the letters. If they were not associated with pain, they would not keep them. That is particularly true for the primitive man: he learns nothing if not in such a way.
The real importance of thoughts and values becomes clear to us only when we consider them as compelling forces in our lives. The beginning of such a recognition of such values and thoughts in primitives would be embodied in the secret teaching of the tribe, which is given at the time of the puberty initiations together with pain and torture to make them remember it. At the same time they are taught certain moral values, which prevent the mere blind action of the manipura fires of passion.
So anahata is really the center where psychical things begin, the recognition of values and ideas. When man has reached that level in civilization or in his individual development one could say he was in anahata, and there he gets the first inkling of the power and substantiality, or the real existence, of psychical things.
— Carl Gustav Jung, The Psychology of Kundalini Yoga: Notes of the Seminar Given in 1932