15. Điều này không phải là quá kỳ lạ hoặc không thể vì nó có thể xuất hiện khi bạn nhớ rằng "World Within" được điều khiển bởi "tôi" và "I" là một phần hoặc một với Infinite "I", đó là năng lượng toàn cầu, hoặc tinh thần, thường được gọi là Thiên Chúa. | 57. Of what value is the power of concentration It is the very highest personal accomplishment which can be acquired and the distinguishing characteristic of every successful man or woman. 58. How may it be acquired By faithfully practicing the exercises in this System. 59. Why is this so important Because it will enable us to control our thoughts and since thoughts are causes conditions must be effects if we can control the cause we can also control the effect. 60. What is changing conditions and multiplying results in the objective world Men are learning the basic methods of constructive thinking. Part Seven Through all the ages man has believed in an invisible power through which and by which all things have been created and are continually being re-created. We may personalize this power and call it God or we may think of it as the essence or spirit which permeates all things but in either case the effect is the same. So far as the individual is concerned the objective the physical the visible is the personal that which can be cognized by the senses. It consists of body brain and nerves. The subjective is the spiritual the invisible the impersonal. The personal is conscious because it is a personal entity. The impersonal being the same in kind and quality as all other Being is not conscious of itself and has therefore been termed the subconscious. The personal or conscious has the power of will and choice and can therefore exercise discrimination in the selection of methods whereby to bring about the solution of difficulties. The impersonal or spiritual being a part or one with the source and origin of all power can necessarily exercise no such choice but on the contrary it has Infinite resources at its command. It can and does bring about results by methods concerning which the human or individual mind can have no possible conception. You will therefore see that it is your privilege to depend upon the human will with all its limitations and misconceptions or .