We Are Energy - And Energy Never Dies, It Changes Form
Nada Amine Awar

We usually introduce ourselves through names, memories, professions, families, and stories. But beneath all these layers lies something much older. Before we were children, we were embryos. Before we were embryos, we were a single cell. Before that cell became part of the human story, life had already been changing for billions of years. And before life itself, the universe was already carrying energy through matter, radiation, motion, stars, planets, and chemistry. Our individual lives are therefore not isolated events. We are temporary forms within a much older process.
There was a Long Journey Before Us and The history of life is a story of transformation. Simple molecules became more complex. Some chemical systems acquired the ability to reproduce. Cells appeared. Some cells entered into partnerships with other cells, and these partnerships eventually became fundamental to complex life. Cells organized themselves into multicellular organisms. Animals evolved. Nervous systems became more sophisticated. Brains emerged. Consciousness, whatever its ultimate nature, appeared within biological organisms. Eventually one branch of life became capable of looking backward and asking:
Where did we come from?
That branch is us. The human being is therefore not the beginning of the story. We are one of its most recent chapters.

Whether we are aware or not Energy is Inside of us. Every second, our bodies transform energy. Our hearts beat. Our lungs move. Our muscles contract. Our neurons generate electrical and chemical signals. Our cells repair themselves. Our brains maintain extraordinarily complex patterns of activity. At the center of cellular energy metabolism is ATP, a molecule used throughout living cells to transfer energy into forms that cellular processes can use. Food provides chemical energy, while plants capture energy from sunlight and store it in chemical form through photosynthesis.
The food we eat is therefore part of a much older chain. Sunlight reaches Earth. Plants capture some of that energy. Plants become food. Animals eat plants. Other animals eat those animals. Eventually, the energy stored in food enters our cells. We transform it into movement, electrical activity, heat, growth, repair, and countless other processes. In this sense, a human being is not a closed object. We are a continuous exchange with the world.
The Sun Is Inside the Story because When you eat a plant, you are receiving energy that entered the plant from sunlight. When you move your hand, ancient solar energy is being transformed through metabolism. When your heart beats, chemical energy is being converted into mechanical work. When your body produces heat, energy is being transferred again. The sunlight that once reached a leaf can therefore become part of a human movement. The boundary between "the world" and "us" is not as absolute as it appears. Matter and energy continually cross that boundary. We breathe the atmosphere. We drink water. We eat organisms that grew from soil. We exchange heat with the environment. We are continuously becoming part of the world, while the world becomes part of us.
What Does "Energy Never Dies" Actually Mean?
There is an important scientific distinction here. The statement "energy never dies" is a poetic expression of the conservation of energy. In classical physics, energy is not created from nothing or destroyed into nothing within an appropriate closed system; it is transferred or transformed from one form to another. The U.S. Department of Energy and the U.S. Energy Information Administration describe this as the conservation of energy.
But this scientific principle does not mean that an individual person's consciousness, personality, memories, or identity have been scientifically demonstrated to survive bodily death as a form of energy. That distinction matters. Science gives us one statement:
Energy is transformed.
Spiritual traditions may ask a different question:
Does something about the person continue after death?
The first question belongs to physics. The second belongs to philosophy, religion, and metaphysics. They should not be confused. What happens when a human being dies? The organized biological process that we call a living person comes to an end. The heart stops. Brain activity ceases. Cells lose their ability to maintain their organized internal conditions. The body begins to return its materials to the environment. But the physical materials do not simply disappear. They enter other processes. Carbon returns to the atmosphere, soil, organisms, and oceans. Water returns to the environment. Minerals return to Earth. Heat is transferred to the surroundings.
Molecules are broken apart and incorporated into new chemical systems. The organized structure that was you disappears, but the physical world continues. In this strictly scientific sense, death is not the disappearance of matter and energy. It is a profound reorganization. But human beings have never been satisfied with asking only what happens to matter. For thousands of years, people have asked:
What happens to us?
Not merely: "What happens to the body?" but: "Does something of the person continue?" Different civilizations have answered this question differently. Some traditions describe heaven. Some describe an ancestral existence. Some describe resurrection. Some describe dissolution into an ultimate reality. And some describe rebirth or reincarnation. These are not interchangeable ideas. They belong to different philosophical and religious traditions.
Reincarnation: Life Continuing Through Another Life
In traditions influenced by Hindu and Upanishadic thought, existence can be understood as a cycle of birth, death, and rebirth known as saṃsāra. The individual passes through successive forms of existence until spiritual realization liberates the self from the cycle. The Upanishadic tradition developed sophisticated ideas concerning rebirth, karma, and liberation, although these ideas evolved over time and are not expressed identically in every text. Rabindranath Tagore was deeply influenced by the Upanishads. His writings include the idea that the individual may pass through successive lives while moving toward a fuller spiritual realization. A philosophical study of Tagore's thought records his explicit engagement with reincarnation and the idea of the soul's gradual perfection through many lives. For Tagore, however, the deepest goal was not simply to keep being born again. The ultimate movement was toward a realization of unity with the universal. In that sense, reincarnation was part of a much larger spiritual picture:
life → death → renewal → growth → realization.
This brings us to one of the most remarkable intellectual encounters of the twentieth century. On July 14, 1930, Rabindranath Tagore visited Albert Einstein at Einstein's home in Caputh, near Berlin. Their conversation turned toward one of humanity's oldest questions:
Does reality exist independently of consciousness, or is reality inseparable from the consciousness that experiences it?
Einstein defended the existence of an objective reality independent of human beings. Tagore approached reality through consciousness and the idea of a universal human or spiritual reality. Tagore argued that the universe we know is inseparable from the consciousness through which we know it. Einstein resisted this conclusion. For him, reality did not disappear simply because humanity disappeared. This disagreement is important because it takes us directly to the question of what consciousness means in the universe. The physicist asked:
Does reality exist without us?
The poet asked:
What does reality mean without consciousness capable of knowing it?
They did not resolve the question. And perhaps it cannot be resolved by physics alone. The Albert Einstein Papers Project notes that the conversation was focused on "the nature of reality" and that Einstein maintained his belief in a world independent of human beings, while Tagore emphasized the inseparability of our understanding of reality from human nature and consciousness.
What If We Put Their Question Beside Evolution?
Here the story becomes extraordinary. For billions of years, the universe existed without humans. Stars formed. Planets formed. Chemistry became increasingly complex. Life emerged. Cells reproduced. Evolution produced organisms capable of sensing their surroundings. Nervous systems became more complex. Brains evolved. And eventually one kind of organism began to ask questions about the universe from which it had emerged. We are descendants of that process. So there is a remarkable possibility-not a scientific conclusion, but a logical way of looking at our existence:
Perhaps consciousness is one of the ways the universe has become capable of experiencing and investigating itself.
The atoms in our bodies were forged through cosmic history. The carbon in our cells belongs to an ancient planetary cycle. The calcium in our bones passed through geological and biological systems. The oxygen we breathe has moved through countless organisms. The energy sustaining our cells comes from a chain extending through life and, ultimately, to the Sun and other physical processes. We are not outside nature looking at nature. We are nature looking at itself.
Does Reincarnation Follow From This?
The conservation of energy does not demonstrate reincarnation. Evolution does not demonstrate reincarnation. Neuroscience has not established that an individual's memories or personality are transferred into another body after death. There is no accepted physical theory showing that a person's personal consciousness survives death and enters another organism. Therefore, it would be scientifically unjustified to say:
"Because energy is conserved, reincarnation must be true."
Energy conservation does not establish that conclusion. But something more interesting can still be said. The idea of reincarnation represents one of humanity's oldest attempts to understand continuity through transformation. And that idea has a powerful metaphorical relationship with biology. We Are Already Part of a Cycle Every cell in our body is temporary. Cells are born. Cells function. Cells divide or die. Their molecules are reused. The atoms continue. Our bodies are continuously rebuilt from material obtained from the world. The food that becomes part of our muscles was once outside us. The oxygen in our blood was recently in the atmosphere. The water inside our cells has moved through rivers, clouds, soil, plants, animals, and oceans. In this physical sense, we are constantly being renewed.
We do not remain materially identical to the person we were years ago. And yet we experience ourselves as continuous. That is one of the great mysteries of being alive.
How can a changing physical system maintain a sense of identity?
A river is a useful image. The water flowing through it today is not the same water that flowed through it yesterday. Yet we continue to call it by the same name. The river has continuity without having identical material. A human being is similar in one respect. The molecules change. Cells die and are replaced. Memories change. The body grows older. Yet something maintains a continuity we call self. Science can investigate many mechanisms underlying this continuity. But the philosophical question remains:
What exactly is the "I" that experiences the continuity?
Perhaps this is where reincarnation becomes interesting even for a scientifically minded reader. We do not have to present reincarnation as a proven scientific mechanism. We can instead ask what the idea is trying to express. Perhaps it expresses humanity's intuition that death is transformation rather than absolute annihilation. Perhaps it expresses the desire that consciousness have a larger horizon than one lifetime. Perhaps it reflects the intuition that the individual belongs to something greater than the individual self. And perhaps, in Tagore's interpretation, the deepest continuity is not the survival of the ego exactly as it was, but the movement of the individual toward a larger universal reality.
Tagore's writings repeatedly distinguish the limited individual self from a larger spiritual reality, drawing strongly on Upanishadic thought. This is philosophy and spirituality-not experimental proof. And that distinction makes the question more interesting, not less. What Actually Continues? After death, several different kinds of continuity can be identified without making metaphysical claims. Matter continues. The atoms of the body enter other systems. Energy continues through transformation. The energy associated with the living organism is transferred and transformed through physical and chemical processes. Genetic information can continue. Children inherit portions of their parents' genomes. Cultural information continues. Words, ideas, stories, discoveries, art, music, and knowledge can pass from one generation to another.
Ecological effects continue. A person's actions can change other people, animals, landscapes, and ecosystems. Memory can continue. Other human beings may carry memories of someone who has died. And then there is the question science has not answered:
Does individual consciousness continue after death?
That remains a metaphysical and religious question rather than an established consequence of the physics of energy conservation.
From One Cell to Many Lives tells that The story of evolution itself is a story of continuity through transformation. The first cells did not survive unchanged. They changed. Their descendants changed. Some lineages disappeared. Others continued. Some cells entered extraordinary partnerships. Those partnerships became part of complex cells. Complex cells became multicellular organisms. Some multicellular organisms evolved into animals. Some animals evolved into mammals. Some mammals became primates.
One primate lineage eventually produced us. At every stage, the old form was transformed. Life continued by changing. This is perhaps the deepest biological lesson:
Life does not continue by remaining the same.
It continues by becoming something else. And So We Return to Energy. The scientific statement is simple:
Energy is transformed.
The biological statement is more complex:
Life is transformed.
The evolutionary statement is deeper still:
Forms of life change while lineages continue.
The philosophical question then asks:
Could consciousness itself participate in a larger continuity that we do not yet understand?
Science cannot currently answer that question with established evidence. Religion and philosophy have offered many answers. Tagore's answer was rooted in the idea of a universal spiritual reality and the possibility of movement beyond the limitations of the individual self. Einstein's contribution to our discussion is different. He reminds us that the existence of reality independent of human consciousness is itself a profound philosophical commitment underlying our scientific picture of the world. Between them lies a question that remains open:
What is the relationship between the universe and the consciousness that has emerged within it?

We Are Not Separate From the Universe . We often imagine ourselves as observers standing outside nature. But evolution tells another story. We are made of nature. Our cells descended from ancient cells. Our mitochondria preserve evidence of ancient biological partnerships. Our nervous systems carry evolutionary history. Our bodies contain remnants of structures inherited from ancestors. Our microbiome participates in our physiology. Our brains developed through biological evolution and experience. Our culture extends our biological capacities. Our technology extends our physical reach. We are therefore not visitors in the universe. We are one of its products. And perhaps one of its questions.
One day, every human body will return its materials to the world. The atoms will continue. The energy will continue to change form. The ecological consequences of our lives may continue. Our genetic descendants may continue. Our cultural descendants may continue. Our words may continue. Our memories may continue in others. And whether consciousness itself continues in some form beyond death remains one of the oldest unanswered questions of human existence. We should not turn that mystery into a scientific certainty. But neither should we be afraid of asking it. Science has taught us that the universe is far stranger than the human imagination once believed.
Evolution has taught us that we are much older than our individual lives. Physics has taught us that nature is governed by transformations deeper than appearances. And philosophy reminds us that understanding the universe also means asking what it means to be the creature doing the understanding.

Our story began with something incredibly small. A cell. It had no language. No philosophy. No religion. No telescope. No mathematics. It simply lived. It copied itself. It changed. Its descendants changed again. Four billion years later, one of those descendants can sit quietly beneath the night sky and ask:
Where did I come from?
The answer reaches backward through evolution. Through cells. Through chemistry. Through Earth. Through stars. And perhaps farther still. Then another question appears:
Where am I going?
No single science can answer that completely. Physics can tell us about energy. Biology can tell us about life. Evolution can tell us about change. Neuroscience can investigate consciousness. Philosophy can examine meaning. Religion can offer spiritual interpretations. And poetry can give language to what remains beyond our certainty. Perhaps that is why the meeting of Tagore and Einstein still matters. One defended a reality independent of humanity. The other emphasized the profound relationship between reality and consciousness. Between them lies a question that remains alive:
What happens when the universe becomes conscious enough to ask what the universe is?
Perhaps the most honest answer is:
We are still learning. We began as part of the universe. We became life. Life became consciousness. Consciousness became a question. And now the question is looking back at its own beginning. We are energy in transformation. We are matter organized by life. We are life capable of remembering. We are descendants of ancient cells. And whatever happens at the end of an individual life, the story of the universe does not stop there. It changes form. And continues.
References
1. Einstein, Albert & Tagore, Rabindranath. "On the Nature of Reality." Conversation at Caputh, July 14, 1930; subsequently published in Modern Review and reproduced in Tagore's The Religion of Man. The Albert Einstein Papers Project confirms the subject and historical context of the exchange. (Einstein@Caltech)
Albert Einstein Papers Project - Einstein and Tagore
2. Tagore, Rabindranath. The Religion of Man. Tagore's philosophical work, which includes the conversation with Einstein as an appendix and develops his ideas concerning universal humanity, spiritual realization, and reality. (Wikipedia)
3. Tagore, Rabindranath. Sadhana: The Realisation of Life. A major source for Tagore's Upanishadic understanding of the self, immortality, unity, and spiritual realization. (Project Gutenberg)
4. The Upanishads - rebirth and saṃsāra. The Upanishadic tradition contains developing doctrines of rebirth, karma, immortality, and liberation; these ideas should be distinguished from modern scientific claims. (Internet Encyclopedia of Philosophy)
5. U.S. Department of Energy. DOE Fundamentals Handbook: Classical Physics. Conservation of energy and transformation of energy. (Wikipedia)
6. U.S. Energy Information Administration. "Laws of Energy." Conservation and transformation of energy, including energy transformations in the human body. (Zhihu)
7. Cooper, G. M. The Cell: A Molecular Approach, "Metabolic Energy." Cellular energy metabolism, ATP, and photosynthesis. (organism.earth)
8. Alberts et al. Molecular Biology of the Cell, "How Cells Obtain Energy from Food." Cellular energy metabolism and ATP-generating pathways. (Renaissance Universal)