Napoleon Hill, a renowned self-help author, is known for his influential work on personal development and success principles. Here are a few quotes attributed to Napoleon Hill that revolve around the concept of the subconscious mind:

1. “Whatever the mind can conceive and believe, it can achieve.”
2. “The subconscious mind will not remain idle! If you fail to plant desires in your subconscious mind, it will feed upon the thoughts which reach it as the result of your neglect.”
3. “Your subconscious mind recognizes and acts only upon thoughts which have been well-mixed with emotion or feeling.”
4. “Our only limitations are those we set up in our minds or permit others to establish for us.”
5. “The subconscious mind consists of a field of consciousness, in which every impulse of thought that reaches the conscious mind through any of the five senses, is classified and recorded, and from which thoughts may be recalled or withdrawn as letters may be taken from a filing cabinet.”
6. “The subconscious mind is more susceptible to influence by impulses of thought mixed with feeling or emotion, than by those originating solely in the reasoning portion of the mind.”

If you’re looking for exact quotes, I recommend referring to Napoleon Hill’s books and writings.