The Mahavakya declaring pure consciousness as the ultimate reality—the very essence of existence.
Author
Aitareya Upanishad
प्रज्ञानं ब्रह्म (Prajnanam Brahma)
Consciousness is Brahman - Aitareya Upanishad 3.3
This is the shortest yet most comprehensive of the four great Mahavakyas. In just two words, it reveals the entire secret of existence.
Prajnanam is not ordinary knowledge or consciousness. It is:
Together: Supreme consciousness or Pure awareness
Not consciousness OF something, but consciousness itself—pure, self-luminous awareness that needs no other light to illumine it.
The Aitareya Upanishad describes creation:
“In the beginning, this was Atman alone. Nothing else existed.
It thought: Let me create the worlds.
It created these worlds.”
Then it declares: Prajnanam Brahma
The creative power of the universe is pure consciousness itself.
Most people think consciousness is something inside the head, produced by the brain. This is backwards.
The Truth:
Like space contains all objects but is not contained by them, consciousness contains all experiences but is limited by none.
Consciousness cannot be proven—it is that by which all proof happens.
You cannot doubt consciousness because:
It is the one thing you can be absolutely certain of.
Descartes said: “I think, therefore I am.”
But Vedanta goes deeper: “I AM, therefore thinking appears.”
In the Mandukya Upanishad, four states are described:
1. Waking (Jagrat)
2. Dream (Svapna)
3. Deep Sleep (Sushupti)
4. Turiya (The Fourth)
Everything known is known BY consciousness, but consciousness is self-known.
Consider:
ज्ञानस्य ज्ञानम् (Jnanasya Jnanam)
The knowledge of knowledge itself
A father teaches his son about honey:
“Bees collect nectar from many flowers and mix it into one honey. The nectars cannot say ‘I am from this flower’ or ‘I am from that flower’—they become one.
Similarly, all beings emerge from Pure Being (Brahman) and don’t know they have come from It.
Whether they are a lion, tiger, snake, or person—they are all that Pure Existence.
Tat Tvam Asi—That Thou Art.”
But what IS that Pure Existence? Prajnanam Brahma—it is pure consciousness itself.
Modern science says consciousness emerges from matter.
Vedanta asks: How can the inert produce the conscious?
The Resolution: There is no inert matter—what we call “matter” is a form of consciousness itself.
Just as:
So too:
Everything is consciousness in various densities and vibrations.
You are aware of:
But you are not IDENTIFIED with them in deep sleep, yet you continue to exist.
What are you really?
The consciousness that witnesses all of these—that is what you are.
And that consciousness is not personal, not limited—it is Brahman, the infinite.
Nisargadatta Maharaj’s method:
“Place your attention on the sense ‘I am’ without words, without images. Stay with that feeling of existence.”
When you do this:
What remains? Pure consciousness—Prajnanam—Brahman.
A powerful analogy:
The ocean creates waves. The waves think they are separate from the ocean.
One wave asks: “What am I?”
The answer: You are the ocean appearing as a wave.
Your form is temporary, your essence is the eternal ocean.
Similarly:
In ordinary experience:
In the realization of Prajnanam Brahma:
This is Advaita—non-duality.
Why do we suffer?
Because we identify consciousness (which is infinite, eternal, and free) with a limited form (body-mind).
When you realize Prajnanam Brahma:
सर्वं खल्विदं ब्रह्म (Sarvam Khalvidam Brahma)
All this is indeed Brahman - Chandogya Upanishad
When you know yourself as consciousness, you know yourself as everything—and nothing can threaten everything.
Does this make you passive? No.
You wake up in the morning not thinking “I must BE alive”—you simply ARE, and life happens.
Similarly, when you realize Prajnanam Brahma:
Brahman is not something far away to be attained.
It is not in heaven or in a temple.
It is not achieved through years of practice.
You ARE it right now.
The consciousness reading these words—that is Brahman.
The awareness in which these thoughts appear—that is Brahman.
The “I AM” before all thoughts—that is Brahman.
Prajnanam Brahma is not a statement to believe.
It is an invitation to recognize what you already are.
Stop seeking.
Be still.
Notice the consciousness that is always here.
That is the truth. That is you. That is Brahman.