There is in every human being a sense which is not generally recognized as such, although nearly every person has had more or less experience regarding its workings. I refer to the sense of the presence of other living things, separate and apart from the operation of any of the five ordinary physical senses. I ask you to understand that I am not claiming that this is a higher sense than the other physical senses, or that it has come to man in a high state of evolution. On the contrary, this sense came to living things far back in the scale of evolution. It is possessed by the higher forms of the lower animals, such as the horse, dog, and the majority of the wild beasts. Savage and barbaric men have it more highly developed than it is in the case of the civilized man. In fact, this physical sense may be termed almost vestigal in civilized man, because he has not actively used it for many generations. The occultist merely re-awakens these senses which have been almost lost to the race. By use and exercise he then develops them to a wonderful proficiency, for use on the physical plane.