While in its essence, the Source of Supply is spiritual, it comes to us through material channels, and, in order to have a share in it, it is necessary to earn it. We have to give something in exchange for what we draw from life in the way of supply. We must give in order to receive, and what we give must be something that the world wants or needs. The secret of supply is, then, to realize that there is unlimited abundance and to live in the consciousness of it, as completely as though no material channels existed, and, at the same time, to work as zealously and be as careful as though there were no such thing as spiritual supply. At the same time we must give the world something that it wants, or otherwise serve in some useful capacity, exercising honesty, probity and justice in all our affairs. It is folly to expect abundance to drop ready-made in our lap; it must be earned by intelligent and faithful service. [11] [11] This subject is treated fully in "The Fundamentals of True Success," by the same author. Published by The Science of Thought Press, Chichester. Being a retired business man who started life with nothing, not even good health, I have looked at this subject from a business man's point of view. The principle applies, however, to every walk in life, and each reader can adapt the teaching of this lesson to his or her particular needs. CHAPTER VIII. THE POWERS AND LIMITATIONS OF THE SUB-CONSCIOUS MIND. The sub-conscious mind is the mind of Nature. It possesses extraordinary powers and intelligence, but no inspiration. It is instinctive: it is animal: it is natural: but there is nothing god-like about it--it is of the earth and the physical plane. It can be described as the inner forces of Nature resident within our body. Having said this we have said nearly all there is to be said about the sub-conscious, yet this is the mind of which some people have made a veritable god. The sub-conscious mind, if led aright, is a very good friend, reducing all repeated thoughts and actions into habit, which, in time, become settled and part of the very life itself. Thus, by conscious right thinking and conscious right action, a good habit is formed, which becomes, in course of time, practically automatic. This, of course, builds up the character, which, in turn, affects the life. It will be seen then, how important is the right use of this willing and faithful servant. It is no god, it has no inspiration, but it is a very useful servant, as we shall see.