Therefore the secret of magnetism, the mystery of attraction in a person, is solved by the study of the heart. Very often we are uncomfortable in the presence of someone; or the presence of someone attracts us without that person having said one word. We may feel as if we had always known a person, as if we had always been friends though we had never seen him before. If we are in tune, we tune others also; but if a person's heart is not in tune, then everyone in his presence also gets out of tune. That is the mystery of attraction and repulsion.