This is Constructive Psychology, and is a normal evolution under both Natural and Divine Law: "Living the Life that we may know the doctrine." It is practical, scientific Psychology worked out and demonstrated in the Laboratory of Life. Religions and Revelations will no longer be mysteries, but open books; for we shall be in touch with their source and at-one with their inspiration. This is what is meant by "The School of Natural Science." Nor is it an idle speculation, nor merely a thing "devoutly to be wished." If the whole nature of man is built and operated under law; if he is, as he seems to be, an aggregate of all substances, an epitome of all principles and processes; then it follows that to understand these laws, processes and correspondences, is to become _master_ of them and of life. Wonderful as have been the discoveries in nature's finer forces and in applied science, all that science has discovered or invented, or art has devised, is like children's toys, when compared with the subtle and marvelous mechanism of man's organism. The rhythmic beating of the heart, synchronous with respiration and the circulation of the blood, are sufficient illustrations. But even this concerns the vehicle, not the driver; the instrument, not the player upon this "harp of a thousand strings." When it comes to the mental and psychical realm, cognition is direct and immediate. We become "aware" of relations and processes, of sequences and powers, by intuition, as we are _aware_ of the Self. This is _apperception_ in its highest sense. Not through the mind, which is a _process_ and a function, but through that which uses, controls and dominates the mind, viz.: the Individual Intelligence, the Soul. In the mind, in daily life, _we_ weigh and measure, reason, choose, compare, and adjust. In intuition or apperception it is borne in, or comes like a flash of light, and seems as if "we always knew it." We may somewhat haltingly describe the process, but we can never impart the knowledge to another, because it is an _individual experience_. As easily could another feel, sense, and _realize_ the pain of thrusting our finger into the fire, as to receive vicariously, from us, a _real_ physical experience. Here lies the difficulty, often the impossibility, of the teacher or the Master, in imparting his knowledge. I am _entirety satisfied_ that by personal effort and experience along these lines of normal higher evolution, there comes a time and a degree of unfoldment and power when, from knowledge and self-mastery, the Master--the Individual Intelligence--having evolved and learned to _control_ the spiritual body, can consciously and deliberately pass out of the physical body and return to it at will. He can do this as consciously and completely as it occurs at death; can go where he pleases, within the range of his unfoldment or spiritual experience, and retain conscious memory of it all after his return to the physical body.