What are the four stages of consciousness?

As an expert in the field of consciousness studies, I have spent considerable time exploring the various theories and models that attempt to explain the complex nature of human consciousness. One of the most intriguing frameworks comes from the ancient Indian philosophy of Advaita Vedanta, which outlines four distinct stages or levels of consciousness. These stages are often referred to by their respective Sanskrit terms: "A," "U," "M," and "AUM," each representing a different realm of consciousness.

Step 1: The Waking Conscious (A)

The first stage, known as the "Waking Conscious," is the state in which we are most familiar. It is characterized by our engagement with the external world through our senses. In this state, we are aware of our surroundings, our thoughts, and our actions. This is the realm of "A," which is associated with the waking state where we interact with the physical world and other people. It is a time of activity, decision-making, and sensory experience.

Key Features:
- Engagement with the external world
- Sensory perception
- Thought processes
- Action and reaction

Step 2: The Dreaming Unconscious (U)

The second stage, the "Dreaming Unconscious," is the state we enter during sleep when we dream. This is a realm where the internal world takes precedence over the external. The "U" level is characterized by a subjective experience that is not bound by the physical laws of the waking world. Dreams can be vivid and emotionally charged, often reflecting our subconscious desires, fears, and unresolved issues.

Key Features:
- Internal subjective experience
- Dreaming and imagination
- Unfettered by physical laws
- Reflection of subconscious content

Step 3: The Deep Sleep Subconscious (M)

The third stage, referred to as the "Deep Sleep Subconscious," is the state of deep, dreamless sleep. Here, the "M" level signifies a realm where there is no awareness of the self or the external world. It is a state of pure rest and rejuvenation, where the body and mind are at their most relaxed. This is a time when the ego and individual identity are not present, and there is a sense of oneness with the universe.

Key Features:
- Dreamless sleep
- No self-awareness or external awareness
- Restorative and rejuvenating
- Experience of oneness

Step 4: The Absolute Consciousness (AUM)

The fourth and final stage is the "Absolute Consciousness," represented by "AUM." This is the ultimate state of consciousness, often described as a state of pure, undifferentiated awareness. It transcends the individual ego and the dualities of existence. In this state, there is a realization of the true nature of reality, which is beyond the limitations of time, space, and form. It is a state of profound peace and enlightenment.

Key Features:
- Transcendence of ego and duality
- Pure, undifferentiated awareness
- Realization of the true nature of reality
- Profound peace and enlightenment

These four stages of consciousness, as described by Advaita Vedanta, offer a comprehensive framework for understanding the different levels of human experience. Each stage represents a different aspect of our existence, from the dynamic interaction with the physical world to the deepest realms of inner peace and spiritual insight.

Advaita VedantaRowLevelRealm1: "A"WakingConscious2: "U"DreamingUnconscious3: "M"Deep SleepSubconscious4: "AUM"AbsoluteConsciousness