The Human Animal

The Summons - The Psychology and Neuroscience behind Chapter 13 - Part III: The Alien Within - ∆ THE CARTHAGE CYCLE

Pearl Andersen

May 29, 2026

Image of Neural Stem Cells - Su Chun Zhang Lab - Waisman Center

The Human Animal

A Weekly Essay on Why We Do What We Do

The Summons

Dear Friends,

This week, two women heard a call they could not explain.

In Antarctica, Dr. Mei Lin knelt beside a collapsing permafrost wall and touched something that should not exist. It was dark, organic, pulsing with a faint blue light. And then she heard it—a voice, not in her ears but in her mind, speaking a single word that echoed across forty millennia: “Free…” She ran. The ice collapsed behind her. And when she reached the surface, gasping in the weak Antarctic sun, she could not explain what she had found. She only knew that she could still feel it—a second heartbeat, a presence, a summons.

In Ushuaia, Sara Vance dreamed of water. She stood on the shore of the Beagle Channel, watching the tide rise faster than any tide should. A voice spoke to her from the depths: “You are the one. You carry the mark. You carry the memory. Come home.” She woke gasping, her hand reaching for the pendant around her neck—the Sign of Tanit, warm against her skin. She had not decided to put it on. One morning, it had simply been there, and she had not questioned it.

When Anne Liu showed her the thermal plume rising from the Antarctic Peninsula, Sara did not hesitate. “Get me a team,” she said. “I’m going back.”

Neither woman could fully explain why she was going. Mei Lin’s discovery was buried under tons of ice, and her helicopter had gone down in a storm. She was presumed dead. Sara had no proof that the pulse in the Antarctic was connected to the artifact she had touched on the Endurance. She had only a feeling—a warmth against her chest, a voice in her dreams, a sense that she was being pulled toward something she could not name.

And yet, both of them went. Not because the evidence compelled them. Because the summons did.

What is it that calls us? What is the voice that speaks without words, the pull that defies logic, the sense that we are meant to do something even when we cannot justify it to anyone else? How do we find the courage to follow a summons we do not fully understand?

The Psychology of Calling

In 1997, the organizational psychologist Amy Wrzesniewski published a study that changed how researchers think about work and meaning. She interviewed employees at a Midwestern hospital—janitors, nurses, doctors, administrators—and asked them to describe their jobs. What she found surprised her. Some of the janitors described their work in purely functional terms: they cleaned floors, emptied trash, mopped spills. But others described their work in profoundly different language. They were not janitors, they told her. They were healers. They timed their cleaning to coincide with patients’ moments of greatest need. They noticed when a patient seemed lonely and paused to chat. They rearranged the furniture in a comatose patient’s room because they had learned from the family that she liked to look at the wall. They were doing the same tasks as the other janitors. But they experienced those tasks as a calling.

Wrzesniewski identified three distinct orientations toward work: a job (done for money), a career (done for advancement), and a calling (done for its own sake, as an expression of identity and purpose). The janitors who felt called did not have better pay or higher status. They had a different relationship to the same work. They felt that they were meant to be doing it.

The psychological study of calling has expanded considerably since then. Researchers have found that a sense of calling is associated with greater life satisfaction, greater resilience in the face of setbacks, and a deeper sense of meaning—even when the work itself is difficult, poorly paid, or unrecognized. But calling is not simply a matter of personal preference. It is experienced as an external summons. People who feel called often describe being pulled toward their work by something outside themselves—a need they perceive in the world, a gift they feel obligated to use, a voice they cannot ignore.

Sara Vance is not an epidemiologist because she enjoys the salary or the prestige. She is an epidemiologist because her father died of a preventable disease, because a nurse named Fatima died of Ebola in Sierra Leone, because a boy named Isaac Krahn died of measles while she watched from twelve hundred miles away. She is called to this work. And now, she is being called to something beyond it—something she does not fully understand but cannot refuse.

The pendant is the physical manifestation of that call. It is warm against her skin. She cannot take it off. She does not know why she put it on. And when the summons comes—the dream, the voice, the heat plume rising from the ice—she does not calculate the odds. She does not weigh the evidence. She goes.

The Neuroscience of the Inexplicable Pull

The human brain is not a purely rational machine. It is a system that processes information in multiple ways, some of which are conscious and deliberate, and some of which are unconscious and automatic. The neuroscientist Antonio Damasio has spent decades studying patients with damage to the ventromedial prefrontal cortex—a region of the brain that processes emotional signals. These patients are cognitively intact. They can reason, calculate, and analyze. But they cannot make decisions. They get lost in endless deliberation, unable to feel which choice is right.

Damasio’s somatic marker hypothesis proposes that our emotional responses to situations—the gut feelings, the intuitions, the inexplicable pulls—are not irrational noise. They are signals. The brain integrates vast amounts of information below the threshold of conscious awareness, and it delivers the result as a feeling. That feeling is not infallible. But it is also not random. It is the brain’s way of telling us something that we cannot yet articulate.

Sara’s pendant is warm. She does not know why. She cannot explain it to Marcus, to Anne, to herself. But the warmth is not random. It is a signal—one that her conscious mind cannot fully process, but that her body recognizes. The warmth is the somatic marker. It is her brain—and perhaps something beyond her brain—telling her: Go.

The Grandmother’s Voice

At the end of the chapter, Sara sits alone on a balcony and remembers her grandmother’s words. It is a memory she has carried for thirty-six years—the white and blue house in Sidi Bou Said, the jasmine scent, the pendant lifted to the light.

“One day, it will call you home. When it does, you must go. No matter what. No matter who tries to stop you.”

Her grandmother was not speaking metaphorically. She was speaking about a literal call—a summons that would come across time and space, a voice that would speak from the depths of the sea and the warmth of the pendant. And Sara, at seven years old, did not understand. She only knew that her grandmother was taken away that night, and that she never saw her again, and that the pendant was the only thing she had left.

Now, thirty-six years later, the call has come.

The psychology of intergenerational transmission—the study of how trauma, memory, and meaning are passed from parent to child—suggests that some calls echo across generations. A grandmother’s words, spoken in a moment of crisis, can shape a granddaughter’s choices decades later. A pendant, given in secret, can become the object around which a life is organized. The summons is not always immediate. Sometimes it waits, dormant, like a virus in permafrost, until the conditions are right for it to wake.

Sara’s grandmother knew that the call would come. She did not know when. She did not know how. But she knew that Sara would be the one to answer it. And she told her, in the only way she could, that when the moment arrived, she must go. No matter what. No matter who tried to stop her.

A Question I’m Sitting With

What summons have I been ignoring because I cannot explain it?

Not the dramatic, life-changing call. The quiet one. The pull toward something—a project, a conversation, a path—that I cannot justify with logic. The warmth against my chest that I have learned to ignore. The voice in my dreams that I have dismissed as mere imagination.

Mei Lin heard a single word from the ice and ran. Sara felt a warmth against her skin and decided to return to the place where everything had changed. Neither of them could fully explain why. Both of them went anyway.

The question is not whether we will be summoned. We will be, in ways large and small, across the course of our lives. The question is whether we will listen. Whether we will trust the warmth. Whether we will go, even when we cannot say why, because something older than logic is calling us home.

What’s Next

Monday:

💎 ∆ The Carthage Cycle—Chapter Fourteen—Part III: The Alien Within—paid subscribers only.

Tuesday:

🌻 Life is Art—stunning science photography and musical gems—free for all.

Wednesday:

💎 From the Research Notes with an exclusive deep dive into the real science and history behind Monday’s Chapter—paid subscribers only.

Thursday:

💎 Life is Art—additional moments of beauty—paid subscribers only.

Friday:

🌻 The Human Animal—a weekly essay on the psychology behind the story—free for all.

Saturday:

🏆 Exclusive Edition—Founding Members only.

A Final Word

My Dear Friend,

Your support makes this work possible. Every paid subscription buys me time to research, to write, and to bring this story to life.

If you’re enjoying these essays and you’re not yet a paid subscriber, please consider becoming one. For as little as $5/month—the price of a coffee ☕ these days—you’ll receive the entire novel, plus a deep dive into the real science and history behind the story—with detailed sourcing for my academic friends. You’ll also unlock exclusive Life is Art content: Thursday’s edition to brighten your week, and for Founding Members, a special Saturday post just for you—stunning science photography paired with musical gems that will stay with you forever.

Don’t miss out on this epic journey.

Take care,

~ Pearl