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On Being

10 min

A Scientist's Exploration of the Great Questions of Existence

Introduction

Narrator: What if the universe has no purpose? What if its spectacular, majestic existence is entirely accidental, a cosmic flicker born from absolute nothingness, driven by purposeless decay, and destined to fade back into oblivion? For millennia, humanity has answered these profound questions with myths of divine creators, tales of an afterlife, and promises of ultimate meaning. But what happens when we set those stories aside and look at our existence—from beginning to end—through the uncompromising lens of science?

In his book, On Being: A Scientist's Exploration of the Great Questions of Existence, chemist and author Peter Atkins embarks on this very journey. He argues that the scientific method is not just one way of knowing, but the only way to discover the true nature of reality, and that in this unflinching, materialist view, we can find a unique and profound sense of joy.

The Only Light in the Darkness

Key Insight 1

Narrator: At the heart of Atkins' argument is a bold and uncompromising claim: the scientific method is the only tool capable of illuminating the nature of reality. He contends that there is nothing, from the origin of the cosmos to the nature of love or the feeling of hope, that science cannot eventually explain. This is not to say science has all the answers now, but that its process—observation, experimentation, and rigorous, public scrutiny—is the only reliable path forward.

Atkins directly challenges the idea that some realms, like spirituality or subjective experience, are forever beyond science's reach. He argues that even our innermost thoughts and feelings are products of the physical brain, and can therefore be investigated through fields like neuroscience and psychology. For Atkins, myths and religious allegories are "stylish new clothes with no Emperor within"—seductive stories that are ultimately admissions of ignorance. Science, in contrast, dispels mystery without diminishing the grandeur of the universe. It replaces myth not with cold, sterile facts, but with a deeper, more authentic wonder rooted in genuine comprehension.

From Divine Whim to Cosmic Zero

Key Insight 2

Narrator: Humanity has long grappled with the ultimate question: why is there something rather than nothing? Creation myths offer a tapestry of answers, almost always involving a divine agent. Consider the Polynesian myth of Ta'aroa, a god who existed alone in a primordial egg. Overcome with boredom and restlessness, he burst the egg asunder. In a fit of petulance, he used his own body to create the world—his spine became mountains, his fingernails the scales of fish, and his blood the red of the sky. The universe, in this telling, is the result of a god's bad mood.

Science, Atkins explains, seeks an entirely different kind of answer—one free of any agent or purpose. It asks how nothing could spontaneously become something. While the precise moment of the Big Bang remains beyond our current understanding, science has uncovered a remarkable clue: the universe appears to be made of nothing. When cosmologists tally up all the positive energy of matter and radiation and subtract the negative energy of gravity, the total comes out to be approximately zero. The same is true for electrical charge and angular momentum. This suggests that creation was not an act of making something from nothing, but of separating Nothing into equal and opposite parts, giving the appearance of something. In this view, the universe simply is, a majestic and spectacular presence hanging in the void, wholly without purpose.

The War of Information

Key Insight 3

Narrator: Just as with the cosmos, myths have long explained the origin of life. The Cahuilla Indians of California told of the god Mukat, who revealed that corn came from his teeth and watermelons from his eyes. The book of Genesis describes God creating every living creature "according to its kind." These stories provide a sense of order and intention. The scientific explanation, evolution, offers a starkly different picture.

Atkins is careful to distinguish between evolution as a fact and natural selection as a theory. The fact of evolution—that life has changed over time—is supported by overwhelming evidence from both the fossil record and molecular biology. Natural selection is the best theory we have for how it happens. It is not a guided process towards greater complexity, but a blind and relentless competition for survival. As Atkins puts it, evolution is about the "random generation of successful junk."

The true unit of this competition is not the individual organism or even the species, but the gene—or more abstractly, information. Life can be seen as a struggle for information to persist. Each organism is a temporary vessel for a genetic message, and evolution is a war where one message is pitted against another. This perspective removes any notion of purpose or design, revealing life's progression as a fundamentally undirected, yet astonishingly creative, process.

The Inevitable Return to Equilibrium

Key Insight 4

Narrator: The human fear of annihilation has led to elaborate attempts to defy death. The ancient Egyptians were perhaps the most obsessed, believing that a person's soul, or ka, needed to find its preserved body to achieve eternal life. This belief drove them to perfect the art of mummification, removing the brain, preserving the heart, and wrapping the body in linen, all to cheat decay and ensure a second, eternal life.

Atkins confronts this fear by walking the reader through the unvarnished, physical reality of what happens after we die. From a scientific perspective, life is a constant, energy-intensive struggle to avoid equilibrium. It is a temporary state of incredible organization in a universe that tends towards disorder. Death is simply the moment that struggle ends. It is the achievement of equilibrium.

The process is systematic and unforgiving. First comes algor mortis, the cooling of the body as it loses heat to its surroundings. Then rigor mortis sets in, as the depletion of the body's energy currency, ATP, causes muscle filaments to lock together, resulting in stiffness. Livor mortis follows, as blood pools due to gravity, discoloring the skin. Finally, the body's own bacteria, no longer held in check, begin the process of putrefaction, breaking down tissues and returning the body's elements to the environment. This, Atkins argues, is our inescapable destiny: to decay.

The End of Legacy, Not the Soul

Key Insight 5

Narrator: Just as we have myths for our beginning, we have them for our end. Many religious traditions speak of an afterlife, a resurrection of the body, and a final judgment. Beliefs like the Rapture—where the faithful are swept up to heaven, leaving the "Left Behinds" to face tribulation—offer hope for a reality beyond physical death. These beliefs are often propped up by claims of near-death experiences or communication with spirits.

Atkins dismantles these ideas with scientific reasoning. He argues that consciousness is not a separate, spiritual entity but an emergent property of the brain's complex neuronal activity. The idea of a mind existing without the brain, known as dualism, is a fantasy. When the brain ceases to function, so does consciousness. Immortality, he suggests, is not the continuation of a soul, but the legacy one leaves behind—through art, science, or memory.

As for the end of the world, science offers its own eschatology, one tied not to prophecy but to astrophysics. The ultimate end for life on Earth will come from our sun. In several billion years, it will exhaust its hydrogen fuel, swell into a red giant, and scorch our planet, ending all life. The universe itself will continue its slow, purposeless decay. This scientific post-history is far more certain than any religious prediction, such as the "Great Disappointment" of 1844, when thousands of believers waited in vain for a Second Coming that never arrived.

Conclusion

Narrator: The single most important takeaway from Peter Atkins' On Being is that a purely scientific, materialist worldview is not a cause for despair, but a source of profound and authentic wonder. He argues that we must have the courage to discard ancient myths and face the universe as it is: purposeless, accidental, and governed by impersonal laws. In doing so, we do not lose meaning; we find it in our own remarkable capacity to understand.

The book leaves us with a powerful challenge. It asks if we can find a "near-spiritual joy" in a solely material perception of the world. Can we accept that we are stardust, children of chaos, and that our brief existence is made extraordinary not by a divine plan, but by our ability to become, through science, the "spreaders of light" in a vast, unthinking cosmos?

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