What is Principle of Mentalism?
Last updated: February 25, 2026
The first and most fundamental Hermetic Principle: "THE ALL IS MIND; The Universe is Mental".
Understanding Principle of Mentalism in Hermeticism
The first and most fundamental Hermetic Principle: "THE ALL IS MIND; The Universe is Mental".
The Principle of Mentalism, as articulated in "The Kybalion," posits that the entire universe, in its essence, is a mental construct within the mind of "The All." This foundational Hermetic concept asserts that all phenomena, from the physical cosmos to the subtlest thoughts, originate from and subsist as mental projections. Historically, this principle resonates with ancient philosophical traditions that emphasize the primacy of consciousness or a divine mind in creation, providing a cohesive framework for understanding reality within Hermetic thought. Its significance lies in establishing a metaphysical basis for other Hermetic principles, particularly those concerning vibration, polarity, and rhythm, by framing them as manifestations within this universal mental field.
What the Teachers Say
Principle of Mentalism vs. Principle of Materialism
The Principle of Mentalism stands in direct opposition to materialistic philosophy, representing fundamentally different views of reality's nature. While mentalism sees mind as primary and matter as secondary, materialism reverses this relationship.
| Aspect | Principle of Mentalism | Principle of Materialism |
|---|---|---|
| Primary Reality | Universal Mind or consciousness as the fundamental substance | Physical matter and energy as the fundamental reality |
| Causation | Mental states and thoughts create physical conditions | Physical processes and chemical reactions create consciousness |
| Universe Origin | Cosmos emerges from infinite intelligence (THE ALL) | Universe arises from random physical processes |
| Human Nature | Humans are fundamentally spiritual beings having physical experience | Humans are complex biological machines with emergent consciousness |
| Change Method | Transform reality by changing mental states and beliefs | Change conditions through physical manipulation and technology |
Etymology
The term "Principle of Mentalism" combines "principle" from the Latin "principium" (meaning "beginning" or "foundation") with "mentalism" derived from the Latin "mens" (meaning "mind"). "Mentalism" itself refers to the philosophical doctrine that mind is the fundamental reality or that mental states are primary. In the context of Hermeticism, this etymology underscores the core assertion that mind is the originating and sustaining force of all existence.
How to Practice This
Practically, the Principle of Mentalism is applied through practices like visualization, affirmation, and focused intention, often termed "mental alchemy." Practitioners consciously direct their thoughts and beliefs to influence their personal reality, understanding that their inner mental states correspond to outer experiences. By cultivating a disciplined mind and intentionally shaping their mental landscape, individuals aim to manifest desired outcomes, transform limiting beliefs, and align with the universal mental fabric. This involves consistent meditation and introspective work to purify and elevate one's mental vibrations.
Connection to Manifestation
The Principle of Mentalism provides the theoretical foundation for all manifestation practices by establishing that reality is fundamentally mental in nature. If the universe is mental and we participate in universal mind, then our focused thoughts and mental images can influence the mental substance from which physical conditions emerge. This principle explains why visualization, affirmation, and belief work in manifestation: we are literally reshaping the mental matrix that underlies physical reality. Understanding this principle transforms manifestation from wishful thinking into a natural application of universal law.
Frequently Asked Questions
This phrase means that the ultimate reality behind all existence is Universal Mind or infinite consciousness. Everything we perceive as physical matter, energy, or phenomena are actually mental creations within this cosmic intelligence, similar to how our dreams exist within our individual minds.
According to this principle, physical reality is a mental creation of THE ALL, manifesting through divine thought and imagination. What appears solid and separate to us exists as interconnected mental patterns within universal consciousness, explaining how mental influence can affect physical conditions.
No, the Principle of Mentalism is not solipsism. Solipsism claims only one's own mind exists, while Mentalism teaches that all individual minds participate in one Universal Mind (THE ALL). This creates a shared reality where other minds and their experiences are equally real within the cosmic mental framework.
Apply this principle by recognizing that your mental states influence your reality through your connection to Universal Mind. Practice mental discipline, positive thinking, and visualization while understanding that your thoughts participate in the same mental substance that creates physical conditions. This awareness enhances your ability to consciously direct your mental energy.
Mentalism is first because it provides the foundation for understanding all other Hermetic Principles. Once you grasp that reality is fundamentally mental, principles like Correspondence ("As above, so below") and Vibration make sense as descriptions of how Universal Mind operates and creates the apparent multiplicity of existence.
In the Source Texts (3)
:::I. THE PRINCIPLE OF MENTALISM · II. THE PRINCIPLE OF CORRESPONDENCE · III. THE PRINCIPLE OF VIBRATION · IV. THE PRINCIPLE OF POLARITY · V. THE PRINCIPLE OF RHYTHM · VI.…
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Used by: Three Initiates