**The Senses.** Through eyes, ears, nose, the sense of taste and the complex and poorly understood sense of feeling, man becomes acquainted with the universe. That which is seen by the eyes, heard by the ears, smelled by the nose, tasted by the mouth, or felt by any part of the body, becomes impressed and registered upon the mind, there later* to be used. The detailed method by which knowledge is added to man is not understood. The theories that prevail concerning the entrance of knowledge into the human mind need not here be discussed. It follows that the man who wishes to gain much knowledge must guard his senses from harm, and must sharpen them, so that during the few days of life they may do as much as is possible to help man establish a rational religion for his guidance. The foundation of human knowledge is derived from the direct action of the senses. **The Sixth Sense.** Important as are the senses in adding knowledge to man, yet it must be admitted that they recognize without help only a very small part of the universe. Our universe is infinite in its variety of expression--of that man feels certain,--and it could hardly be expected, therefore, that man, who admittedly is yet far from perfection, should be able to know, even with the greatest aid, all of the universe. The truth that an immeasurable part of the universe lies outside of human experience, is borne in upon every thinking man. In recent times, the developments of science have emphasized this vast region of the unknown. The mystery of electricity, in the telephone and telegraph; the wonder of space, in wireless telegraphy; the marvel of the elements, speak clearly of places and conditions of which we as yet have no clear and accurate conception, and before which the senses of man, unaided, stand helpless. Nevertheless, glimpses into this unknown region may be had by helps to the senses. By the telescope the far is brought near; by the microscope the small is made large; by the photographic plate unseen light is made visible; by the well tuned coil of wire the wireless message is taken out of space; by the spectroscope, light is broken into its elements, and so on through almost the whole field of human endeavor. Facts that are gathered in such an indirect way are as correctly certain as are those that are sensed directly. The world would lose tremendously should all the truth gathered through aids to the senses be removed.