One may object that the highest ideas do not come to us through the senses, but the reply is that the things obtained through the senses are the “raw material” upon which the mind works, and fashions the beautiful things that it is able to produce in its highest stages.  Just as is the body dependent for growth upon the nourishment taken into it, so is the mind dependent for growth upon the impressions received from the Universe—­and these impressions come largely through the senses.  It may be objected to that we know many things that we have not received through our senses.  But, does the objector include the impressions that came through his senses in some previous existence, and which have been impressed upon his instinctive mind, or soul-memory?  It is true that there are higher senses than those usually recognized, but Nature insists upon one learning the lessons of the lower grades before attempting those of the higher.

Do not forget that all that we know we have “worked for.”  There is nothing that comes to the idler, or shirker.  What we know is merely the result of “stored-up accumulations of previous experience,” as Lewes has so well said.

So it will be seen that the Yogi idea that one should develop all parts of the Mind is strictly correct, if one will take the trouble to examine into the matter.  A man sees and knows but very little of what is going on about him.  His limitations are great.  His powers of vision report only a few vibrations of light, while below and above the scale lie an infinity of vibrations unknown to him.  The same is true of the powers of hearing, for only a comparatively small portion of the sound-waves reach the Mind of Man—­even some of the animals hear more than he does.

If a man had only one sense he would obtain but a one-sense idea of the outside world.  If another sense is added his knowledge is doubled.  And so on.  The best proof of the relation between increased sense perception and development is had in the study of the evolution of animal forms.  In the early stages of life the organism has only the sense of feeling—­and very dim at that—­and a faint sense of taste.  Then developed smell, hearing and sight, each marking a distinct advance in the scale of life, for a new world has been opened out to the advancing forms of life.  And, when man develops new senses—­and this is before the race—­he will be a much wiser and greater being.

Carpenter, many years ago, voiced a thought that will be familiar to those who are acquainted with the Yogi teachings regarding the unfoldment of new senses.  He said:  “It does not seem at all improbable that there are properties of matter of which none of our senses can take immediate cognizance, and which other beings might be formed to perceive in the same manner as we are sensible to light, sound, etc.”