The subconscious mind consists of a field of consciousness, in which every impulse of thought that reaches the objective mind through any of the five senses is classified and recorded, and from which thoughts may be recalled or withdrawn.
The subconscious mind works night and day. Through a method of procedure, unknown to man, the subconsious mind draws upon the forces of Infinite Intelligence for the power with which it voluntarily transmutes one's desires into their physical equivalent, making use always of the most practical media by which this end may be accomplished.
You can not entirely control your subconscious mind, but you can voluntarily hand over to it any plan, desire or purpose which you wish transformed into concrete form. It alone contains the secret process by which mental impulses are modified and changed into their spiritual equivalent.
The possibilities of creative effort connected with the subconscious mind are stupendous and imponderable. They inspire one with awe.
Everything which man creates begins in the form of a thought impulse. Man can create nothing which he does not first conceive in thought.
"Nothing happens unless first a dream." Carl Sandburg
All thought impulses, intended for transmutation into their physical equivalent, voluntarily planted in the subconscious mind, must pass through the imagination, and be mixed with faith. The "mixing" of faith with a plan or purpose, intended for submission to the subconscious mind, may be done only through the imagination.
"The Think and Grow Rich: The Mastermind Volume" is the most complete and essential edition of Napoleon Hill's 1937 bestseller, published in the easy-to-use large format and same trim as the "Think and Grow Rich Workbook" to help Starter Kit readers put the original text into action.
Source: Napoleon Hill: Think and Grow Rich Starter Kit