I’ve spent most of my life looking into the human brain, sometimes using a CT scan or an MRI machine, but other times with a patient sitting on the exam table, searching their eyes for the flicker of a thought, a question, or fear. The deeper I go, the more I realize the strangest thing about the brain is that it somehow produces the mind, and yet we treat those two as strangers to each other.
Quarks, Photons, and Messy Science
Let’s start from the beginning. In physics, for example, the hardest of the “hard” sciences, things are supposed to be simpler, at least on paper. Quarks and photons exist though no one will ever see one. But even physics, when you look closely enough, the science gets messy. Quantum particles both exist and don’t exist at the same time, and we can’t know which is the case until we look at them. It’s a strange, hard beauty to try to understand. A glance at this Wikipedia article on “Schrödinger’s cat” might (or might not) help.
So if solid-science physicists can believe in something they can’t see, will never see, why do we find it so strange that the mind, the part of us that thinks and feels, can exist invisibly within the folds of the brain? You can’t hold a thought in your hand, but you can see its shadow dance across a scanner’s field as electrical storms ripple across tiny neural networks. It’s all right there, hiding in plain sight.
The Brain at Fault
When a person has a stroke or a brain tumor, I can often listen to them and see their symptoms and say, “There. That’s where in the brain it sits.” If the tumor is in the temporal lobe, maybe their memory or hearing begins to falter. If the stroke hits the occipital region, vision disappears. That’s the clean, clinical world of neurology.
Psychiatry, though, is trickier. The same brain that collapses under a bullet or a clot also quietly crumbles under depression or a football injury trauma. But in those cases, we can’t yet see where the brain’s injured by looking and asking. The brain fabric changes are too subtle to show up clinically in a big way. Yet the changes are just as real. The mind is simply the brain doing what the brain does when it’s healthy or misfiring when it isn’t.
The Hardware, the Software, and the Human
Back in the mid-twentieth century, as computers entered the culture and medicine, people started comparing our brains to machines. The brain was the hardware: solid, complex, full of circuits. The mind, they said, was the software, the unseen set of instructions that told the hardware what to do.
It wasn’t a terrible metaphor at first. Medications changed the “hardware,” psychotherapy fine-tuned the “software.” But something about it always rang hollow. Because unlike a computer, your brain doesn’t separate cleanly into parts that can be unplugged or rewritten without consequence. It’s not binary. It’s biological.
A South African psychiatrist named Dan Stein reimagined that metaphor. He prefers the term “wetware.” Not hardware or software, just wetware, the living, breathing, chemical stew of thoughts, emotions, and impulses that runs on electricity and chemical neurotransmitters instead of silicon and code. Every time you’re filled with joy or sorrow, some part of that wetware sparks, firing microscopic currents from neuron to neuron. It’s one system, pulsing and alive, not two pieces pretending to cooperate.
The Ghost of Descartes
If Dr. Stein’s wetware feels new, the argument it challenges is as old as Western philosophy itself. Somewhere in seventeenth-century France, a man named René Descartes sat by the fire and tried to prove the existence of God. To do this, he imagined that the mind and the body were separate. The body was mortal, the mind immortal. The body could decay while the soul, whatever that was, could float away into heaven.
It was a neat trick, a way of keeping science and religion from bumping into each other. The body was the scientist’s territory; the soul belonged to the priest. Descartes probably thought he was building peace between them. What he actually built was a wall. A wall that medicine, psychology, and philosophy still keep running into.
That wall, the division between mind and body, took root so deeply that most of us still believe it. When someone says, “It’s just in your head,” they mean it isn’t real. But the truth is, everything is in your head. Your joy. Your faith. Your grief. They’re all electrical, molecular, living processes made of the same stuff as your memory and your heartbeat. That doesn’t make them less meaningful, it makes them miraculous.
Who Cares Anyway?
Someone once asked me why any of this matters. Why bother splitting hairs about whether the mind and brain are one or two?
I think about a woman I once treated. She was a bright, thirty-something professional who came in after reading a book about autism. She wanted to know if she might be “on the spectrum.” She wasn’t. But what she was really asking was something deeper: Why do I feel the way I do? Why do I see the world differently from others?
We all ask that question eventually. Maybe not out loud, but in quiet, anxious moments. The answer, or at least the beginning of it, lies in understanding that the way we feel, think, and love isn’t a ghostly mystery, it’s the biology of who we are.
When we ask whether a pill can help our depression or whether therapy can heal a hurt, we’re really asking whether our mind, the thing we can sense but not see, can change its own physical foundation. And it can. A good therapist reshapes neural pathways just as surely as a drug changes serotonin chemistry. Learning, conversation, connection, they all leave footprints in the wetware.
The Sticky Subject of Soul
At this point, things get uncomfortable. The word “soul” creeps in. And once it does, someone inevitably accuses science of trying to “explain away” religion. That’s not the goal. Science can’t prove or disprove the existence of a soul, any more than it can find heaven with a stethoscope.
To say the mind emerges from the brain isn’t to deny the soul, it just acknowledges that biology underpins the machinery of love, grief, awe, and compassion. Maybe Descartes was half right after all; maybe there is a realm beyond biology. The brain could be the receiver, not the signal, the violin, not the music. But even so, the violin still matters.
Watching the Living Brain Think
Modern imaging has given us something Descartes could never have imagined: a way to watch the mind in motion. We can scan a person’s brain as they solve a math problem, remember a childhood face, or recognize images of love vs. indifference.
Each of those actions sends blood rushing to a different circuit. Some clusters go quiet, others ignite. Put enough of these images together, and you can create a living movie of thought itself. It’s impossible not to be moved by that, the sight of consciousness flickering across a grey landscape of tissue and light.
Every time you reflect on your day or worry about your kids, your neurons fire in patterns as intricate as constellations. Those patterns are you. Not in some metaphorical sense, but literally you. Try to separate that from identity or spirit, and you end up cutting yourself in half.
Hearts, Minds, and Songs
There’s an old song that begins, “Heart and soul, I fell in love with you…” and every time I hear it, I think about how strange it is that we’ve always split the human experience into parts. The heart for emotion. The mind for reason. The soul for the eternal. Yet the heart doesn’t fall in love, the brain does. The heart just keeps time.
Still, there’s poetry in the metaphor. Ask anyone who’s lost someone they love where grief lives, and they’ll place a hand on their chest, not their head. So maybe we need both languages, the scientific one that maps neurons and synapses, and the human one that feels heartbreak as a physical ache.
What the Scans Cannot Do
For all its wonders, brain imaging hasn’t turned us into mind readers. A scanner can show which circuits glow when someone feels joy or sorrow, but it can’t decode the actual thought behind that glow. You can’t look at a scan and tell if someone’s remembering their wedding or missing their father.
And thank goodness for that. Privacy still lives inside the borders of our own skulls. No machine can take that from us. One would hope that never happens.
Still, every time technology gets better, it narrows the gap between mystery and measurement. I remember watching a documentary hosted by the actor Morgan Freeman years ago, called “The Story of God”. In one scene, neuroscientist Andrew Newberg scans the brains of praying nuns and meditating monks, both sets of individuals believers in God or the spiritual. The images are astonishing. When people focus deeply on God or transcendence, their frontal lobes ignite like sunrise.
But when an atheist meditator, an experienced, consistent meditator who believed that there was no God, repeated the same exercise, nothing similar happened. That doesn’t prove or disprove anything divine. It just shows that spirituality, whatever it is, leaves fingerprints in the brain. Even the sense of sacredness is written into our wetware.
The Unibody Design
Let’s step out of the lab for a moment. A century ago, carmakers built vehicles in two separate parts: they build a frame and then built the car body on it. Then they discovered a better method called unibody construction. The build was one solid piece, frame and body together, stronger, safer, more efficient.
We’re built that way, too. No detachable “frame” of our physical body, no separate “carriage body” for the mind to ride around in. One continuous structure. Unibody. Every emotion floods through both, your gut twists, your pulse quickens, your chest tightens. Biology and experience entwined so tightly they can’t be pulled apart.
The Problem with Specialties
Medicine, however, still thinks in compartments. If your stomach hurts, you see a gastroenterologist. If your heart skips, a cardiologist. If your mood crashes, a psychiatrist. It’s how we organize knowledge, but it’s not how the human body works.
We aren’t divided up by organ system. We’re one organism, every part tugging gently on every other. If you’ve ever watched someone crumble under grief and seen their blood pressure spike, you’ve witnessed that unity firsthand. The brain-mind, our wetware, sits at the center of it all.
Sometimes I think our specialties are like the training wheels of modern medicine, helping us study manageable pieces until we’re finally ready to ride the whole human bike. But eventually we’ll have to take the training wheels off. The real answers are coming from the intersections, like cardiology and psychiatry, neurology and immunology, biology and empathy. That’s where the next frontier lies.
What We Know—and Don’t
We can now watch a person’s brain change as they practice mindfulness or go through therapy. We can see grey matter thicken in regions responsible for attention, empathy, and self-awareness. We can see neural networks rewire after trauma or depression.
What that means is that personal growth, the story of a human trying to become whole again, can be tracked in pixels and voxels. But here’s the paradox: those pixels represent something far larger than the sum of their parts. They represent meaning, courage, redemption. And meaning can’t be scanned.
So maybe the truth is this: the mind isn’t separate from the brain, but neither is it reducible to it. The map is not the territory. A scan is not a soul. But both point to something exquisitely human, a brief flicker of consciousness aware of itself, trying to make sense of its own machinery.
Where That Leaves Us
When patients ask how much of “them” lives in their brain, I tell them this: your mind is what your brain does when it’s alive. It’s the sound a violin makes when you draw the bow. The two can’t exist apart, but neither can they be reduced to one.
And so, each time you form a thought or say a prayer or think of the one you love, somewhere in that wetware a tiny spark leaps across the gap between two neurons. The same brain that gives rise to logic gives rise to grace. The same bundle of nerves and blood runs both joy and despair.
Our mind exits, just as do quarks and photons and the most distant of galaxies that we also cannot see, matter given the improbable gift of wondering what it means to be matter. Maybe that’s where the divine hides, not in some unreachable sky, but right there between the firing of two neurons inside the extraordinary unibody universe of a single, human brain.
Helpful Links:
National Center for Biotechnology Information on Neuroimaging in Anxiety Disorders
PubMed Central, National Library of Medicine on Neuroimaging the Effects of Psychotherapy
Psychiatric Times October 2021, go to page 51 (numbered page 44 in the document)
Mass General Hospital Psychiatry Research on Mindfulness and Brain Grey Matter
UCLA Newsroom on Feelings into Words Effects on the Brain
Progress in Neurobiology on Neuroimaging of Emotional Self-Regulation
Dr. Neeta Mehta. Mind-body Dualism: A critique from a Health Perspective. In: Brain, Mind and Consciousness: An International, Interdisciplinary Perspective (A.R. Singh and S.A. Singh eds.), MSM, 9(1), p202-209.
University of Colorado, Boulder on Thoughts as Things
American Psychological Association on Scanning the Brain
Andrew B. Newberg, MD on the Nature of Theology
Books by Dan J. Stein, MBChB UCT, FRCPC, PhD, DPhil:
Problems of Living: Perspectives from Philosophy, Psychiatry, and Cognitive-Affective Science
Philosophy of Psychopharmacology: Smart Pills, Happy Pills, and Pepp Pills
Serotonergic Neurocircuitry in Mood and Anxiety Disorders
Cognitive Science and the Unconscious
Cognitive-Affective Neuroscience of Depression and Anxiety Disorders.
Reference
Dan J. Stein, MBChB UCT, FRCPC, PhD, DPhil and Awais Aftab MD. Traveling the Middle Road Between Skepticism and Scientism: Conversations in Critical Psychiatry. Psychiatric Times Vol. XXXVIII No. 10 October 2021, pp. 44-46.