As the organs of our senses can experience life that is around us, so the nervous centers can experience life that is within us. But when these centers are not used for many years they become blunted, not destroyed but blunted, and can no longer be put to the use for which they exist. Many who embark upon spiritual work guided by a proper teacher begin to feel a sensation in the middle of the forehead, as if something is awakening there. After some time they begin more and more to notice a sphere of which they were quite ignorant. There are some who begin to notice a feeling in the solar plexus which they did not have before. If that feeling is awakened they naturally become more intuitive. Some feel a certain sensitiveness on the top of their head, or in the center of their throat. With their growth they feel it more and more. Among these people there will doubtless be found some who are intuitive by nature.