The Master Key System
Master Key System Summary: All 24 Parts Explained
The Master Key System is a 24-part course written by Charles Haanel and first sent to students as weekly lessons. Each part sets out a group of ideas in short numbered paragraphs, closes with a practical exercise for the coming week, and is followed by ten study questions. This part-by-part summary follows that order. It describes what Haanel teaches in each part, in plain language, and notes the exercise he assigns.
A word on what you are reading. Haanel presents his ideas as scientific law. Most of them are his beliefs and claims, drawn from the New Thought movement of his time, and they have not been confirmed by science. This summary reports what the text says. Where a part makes claims about health or the body, treat them as historical ideas, not medical advice. Wording also differs between editions; short quotations here follow the 1919 copyright edition.
Parts One to Six: The Foundations
Part One: The World Within
Haanel opens with his central idea: the "world without" reflects the "world within." Conditions in life follow from our habitual mental attitude, so the secret of power lies in our method of thinking. He describes two minds. The objective mind, with the brain as its organ, connects us to the outer world. The subconscious mind, which he links to the solar plexus, connects us to the Universal Mind, the one consciousness he believes fills all space. The exercise is the sitting exercise: sit still, alone and upright, for fifteen minutes to half an hour daily until you control the body.
Part Two: Conscious and Subconscious
This part explains the two modes of mental activity. The subconscious runs the vital processes of the body, stores memory and forms habits. The conscious mind reasons, chooses and acts as "the watchman at the gate," guarding the subconscious from false suggestions. Haanel says a strong counter-suggestion, repeated often, can replace an unwanted habit of thought. He names the principle behind it all the law of attraction. The exercise: sit still as before, but now inhibit all thought.
Part Three: The Solar Plexus
Drawing on Judge Troward, Haanel describes the cerebro-spinal nervous system as the organ of the conscious mind and the sympathetic system as the organ of the subconscious. He calls the solar plexus the "sun" of the body, a center that radiates energy. Fear, he says, is its great enemy. To impress the subconscious, concentrate on the object of your desire, and say what you want, not how it should come. The exercise adds full physical relaxation to the stillness.
Part Four: The "I"
The real "I," Haanel argues, is neither the body nor the mind but the spiritual self that directs both. He offers the affirmation "I can be what I will to be" and warns that starting something and not finishing it builds a habit of failure. He stresses giving and service, and recommends seeking the Silence often. The exercise moves from physical to mental release: let go of hatred, anger, worry, jealousy and disappointment.
Part Five: The Mental Home
Haanel claims that at least ninety per cent of mental life is subconscious. Our minds are built from impressions we accepted without examination, so he urges a daily "mental house-cleaning." He pictures a fine estate waiting for its heir: to claim it you must desire it, assert your claim and take possession, and use is the condition of keeping it. The exercise: picture a place with pleasant associations in full detail.
Part Six: The Brain and Attention
Haanel compares the brain and nervous system to electrical machinery, the "mechanism" through which thought acts. He calls attention, or concentration, probably the most important essential in mind culture, and compares it to a sun glass that burns only when held still. Try to hold your attention on one object for ten minutes, he says, and you will find the mind wanders. The exercise: study a photograph closely, then see it again with eyes closed.
Parts Seven to Twelve: Imagination, Truth and Law
Part Seven: Visualization
Part Seven defines visualization as "the process of making mental images." Haanel lays out three steps: idealization, visualization and materialization. He cites the architect, the engineer and Nikola Tesla, who described building inventions in his mind first. Earnest desire, confident expectation and firm demand, he says, bring attainment. He warns against anxiety, comparing it to a child who keeps digging up a seed to see if it is growing. The exercise: visualize a friend and hold a conversation in your mind.
Part Eight: Imagination
"You may freely choose what you think," Haanel writes, but the result is governed by law. He asks readers to analyze each thought and keep only those that benefit everyone affected. Imagination, he says, is constructive mental labor, not fancy or day dreaming. What counts is the predominant attitude, not a few minutes of positive thinking. The exercise is the famous battleship: picture one, then trace it back through steel, ore, engineers and Congress to a thought.
Part Nine: Health, Wealth and Love
Haanel names three things all people want: health, wealth and love. The way to attract them, he says, is to think in line with the Truth. He gives the affirmation "I am whole, perfect, strong, powerful, loving, harmonious and happy" and prints a letter from Frederick Elias Andrews, who credits it with his recovery from childhood illness. The exercise: visualize a flower growing from seed to bloom, until you can sense its fragrance.
Part Ten: Abundance and Cause
Abundance, Haanel says, is a natural law, visible in the lavishness of nature. He argues that thought is the link between the Infinite and the individual, and that a thought dropped into Universal Mind grows into conditions as a seed grows into a plant. He separates creation from evolution, and describes a "circuit" that forms only when thought is in harmony with the creative principle. The exercise: mentally draw a line, a square, a circle and a cone, then change their color.
Part Eleven: Inductive Reasoning
Haanel praises inductive reasoning, the method of comparing many instances to find a common cause. He cites Cuvier rebuilding an extinct animal from a tooth and Leverrier predicting Neptune. He then links this to a method of believing a desire is already fulfilled, citing the Bible: "believe that ye receive them, and ye shall have them." The exercise is to concentrate on that verse.
Part Twelve: Knowledge, Courage, Faith
Three steps are essential: "the knowledge of your power; second, the courage to dare; third, the faith to do." Your ideal must stay fixed, like a sculptor's design. Haanel warns against seances, telepathy and hypnotism as harmful counterfeits of mental power. He calls the law of attraction another name for love. The exercise: relax body and mind, then realize your unity with the Universal Mind.
Parts Thirteen to Eighteen: Applying the Law
Part Thirteen: Dreamers and Science
Science, Haanel notes, often learns most from rare and unusual facts. He argues that people who seem to have unusual power are not acting supernaturally but using the creative power of thought. What everyone really wants is happiness and harmony. He warns against trying to tell the Infinite how to deliver a result. The exercise: recognize that you are a part of the whole, the same in kind and quality.
Part Fourteen: Harmony
Haanel describes matter as made of electrons and the body's cells as intelligent workers. The subconscious differs from Universal Mind only in degree, as a drop differs from the ocean. He warns that decades of negative thinking will not vanish after a few minutes of right thinking. The exercise: concentrate on harmony until you are conscious of nothing else.
Part Fifteen: Words and Insight
The laws we live under work for our benefit, Haanel says, and difficulties arise when we refuse to let go of the old or accept the new. Love gives thought its vitality. Words are the first form thought takes, so choose them with care. Insight, which he calls a kind of mental telescope, is developed in the Silence. The exercise: reflect that knowledge does not apply itself, then plan how to apply it.
Part Sixteen: Wealth and Visualization
Wealth, Haanel argues, is a means, not an end. He repeats the three steps of idealization, visualization and materialization, and cites Henry M. Flagler, who told a reporter he could see a whole project clearly in his mind. A thought's result depends on its form, quality and vitality. The exercise: realize that harmony and happiness are states of consciousness, not possessions.
Part Seventeen: True Concentration
This is the main lesson on concentration. Haanel says it is "much misunderstood": it is not strain but absorption, like an actor who forgets himself in a role. Desire plus concentration, he claims, leads to discovery and intuition. He warns against chasing the symbols of power rather than power itself. The exercise: concentrate with no conscious effort until you are identified with your object.
Part Eighteen: Attraction and Attention
Haanel describes a change in the world's thinking and quotes J. A. Fleming on energy as an expression of mind. Growth depends on giving and receiving, and like attracts like on the mental plane. Attention, he says, grows through interest, and interest through attention. The exercise: concentrate on your power to create.
Parts Nineteen to Twenty-Four: Truth and Spirit
Part Nineteen: One Principle
Opposites, Haanel argues, are two aspects of one thing. Evil is the absence of good, as darkness is the absence of light, and mind is the only real principle. Even thinking needs fuel, so the body must be fed. The exercise: concentrate for a few minutes daily, then reflect that "appearances are deceptive."
Part Twenty: Recognition and Inspiration
"Thinking is the true business of life, power is the result." Spiritual power works only through recognition and use. Inspiration comes in the Silence. Haanel links breathing to drawing in life, and warns that forcing results by will power works against the law. The exercise: go into the Silence and reflect on the verse "In Him we live and move and have our being."
Part Twenty-One: Big Thoughts
The real secret of power, Haanel says, is consciousness of power. Large ideas push out small ones, and the master mind "thinks big thoughts." Our lives reflect our predominant thoughts, and habits are built and broken by repetition. He frames history as a contest between creative and negative thinking. The exercise: concentrate on the Truth in the Silence.
Part Twenty-Two: Thoughts as Seeds
Thoughts are seeds that grow in the subconscious. Haanel ties health to rates of vibration and claims mental images of perfection can heal, claims medicine does not support. He praises the body's own healing work and quotes Dr. Albert T. Shofield on mental therapeutics. The exercise: concentrate on Tennyson's lines, "Closer is He than breathing, and nearer than hands and feet."
Part Twenty-Three: Money and Service
The money consciousness is a receptive attitude, and fear is its opposite. The first law of success is service: we make money by making money for others. Haanel includes a story about a Chicago businessman who found success after seeking ideas from "Infinite Mind." The exercise: reflect that man is "a spirit with a body."
Part Twenty-Four: The Truth
The final part argues that the senses mislead us, as with the sun appearing to move. Metaphysics, Haanel says, is knowing the Truth: to express health, think health. He writes that "you have no patient but yourself." The course closes by naming the realization of spirit as the Master Key itself.
Reading the Summary Well
A summary can show you the shape of the course, but Haanel insisted the value lies in practice. The exercises build on one another, from sitting still to visualization and concentration. If you want to work through the parts yourself, take one part each week, do the exercise daily, and read his claims with an open but careful mind.
References
- The Master Key System on Wikipedia
- Charles F. Haanel on Wikipedia