I remember galloping, the wind in my mane and the road hard against my hooves. Dr. Krantor says this is a false memory, that there is no possible genetic linkage between mice and horses, and I tell him that if scientists are going to equip IQ-enhanced mice with electronic vocal cords and teach them to talk, they should at least pay attention to what the mice tell them. "Mice," Dr. Krantor tells me acidly, "did not evolve from horses," and I ask him if he believes in reincarnation, and he glares at me and tells me that he’s a behavioral psychologist, not a theologian, and I point out that it’s pretty much the same thing. "You’ve got too much free time," he snaps at me. "Keep this up and I’ll make you run the maze again today." I tell him that I don’t mind the maze. The maze is fine. At least I know what I’m doing there: finding cheese as quickly as possible, which is what I’d do anyhow, anytime anyone gave me the chance. But what am I doing galloping?

"You aren’t doing anything galloping," he tells me. "You’ve never galloped in your life. You’re a mouse." I ask him how a mouse can remember being a horse, and he says, "It’s not a memory. Maybe it’s a dream. Maybe you got the idea from something you heard or saw somewhere. On TV." There’s a small TV in the lab, so Dr. Krantor can watch the news, but it’s not even positioned so that I can see it easily. And I ask him how watching something on TV would make me know what it felt like to be a horse, and he says I don’t know what it feels like to be a horse, I have no idea what a horse feels like, I’m just making it up.

But I remember that road, winding ahead in moonlight, the harness pulling against my chest, the sound of wheels behind me. I remember the three other horses in harness with me, our warm breath steaming in the frosty air. And then I remember standing in a courtyard somewhere, and someone bringing water and hay. We stood there for a long time, the four of us, in our harness. I remember that, but that’s all I remember. What happened next?

Dr. Krantor came grumbling into the lab this morning, Pippa in tow. "You have to behave yourself," he says sternly, and deposits her in a corner.

"Mommy was going to take me to the zoo," she says. When I stand on my hind legs to peer through the side of the cage, I can see her pigtails flouncing. "It’s Saturday."

"Yes, I know that, but your mother decided she had other plans, and I have to work today."

"She did not have other plans. She and Michael were going to take me to the zoo. You just hate Michael, Daddy!"

"Here," he says, handing her a piece of graph paper and some colored pens. "You can draw a picture. You can draw a picture of the zoo."

"You could have gotten a babysitter," Pippa yells at him, her chubby little fists clenched against her polka-dot dress. "You’re cheap. A babysitter’d take me to the zoo!"

"I’ll take you myself, Pippa." Dr. Krantor is whining now. "In a few hours. I just have a few hours of work to do, okay?"

"Huh," she says. "And I bet you won’t let me watch TV, either! Well, I’m gonna talk to Rodney!"

Pippa calls me Rodney because she says it’s prettier than rodent, which is what Dr. Krantor calls me: The Rodent, as if in my one small body I contain the entire order of small gnawing mammals having a single pair of upper incisors with a chisel-shaped edge. Perhaps he intends this as an honor, although to me it feels more like a burden. I am only a small white mouse, unworthy to represent all the other rodents in the world, all the rats and rabbits and squirrels, and now I have this added weight, the mystery Dr. Krantor will not acknowledge, the burden of hooves and mane.

"Rodney," Pippa says, "Daddy’s scared I’ll like Michael better than him. If you had a baby girl mouse and you got a divorce and your daughter’s mommy had a boyfriend, would you be jealous?"

"Mice neither marry nor are given in marriage," I tell her. In point of fact, mice are non-monogamous, and in stressful situations have been known to eat their young, but this may be more than Pippa needs to know.

Pippa scowls. "If your daughter’s mommy had a boyfriend, would you keep her from seeing your daughter at all?"

"Sweetheart," Dr. Krantor says, striding over to our corner of the lab and bending down, "Michael’s not a nice person."

"Yes he is."

"No, he’s not."

"Yes he is! You’re just saying that because he has a picture of a naked lady on his arm! But I see naked ladies in the shower after I go swimming with Mommy! And Michael doesn’t always ride his motorcycle, Daddy! He promised to take me to the zoo in his truck!"

"Oh, Pippa," he says, and bends down and hugs her. "I’m just trying to protect you. I know you don’t understand now. You will someday, I promise."

"I don’t want to be protected," Pippa says, stabbing the paper with Dr. Krantor’s red pen. "I want to go to the zoo with Mommy and Michael!"

"I know you do, sweetheart. I know. Draw a picture and talk to the rodent, okay? I’ll take you to the zoo just as soon as I finish here."

Pippa, pouting, mumbles her assent and begins to draw. Dr. Krantor, who frequently vents his frustrations when he is alone in the lab, has told me about Pippa’s mother, who used to be addicted to cocaine. Supposedly she is drug-free now. Supposedly she is now fit to have joint custody of her daughter. But Michael, with his motorcycle and his naked lady, looks too much like a drug dealer to Dr. Krantor. "If anything happened to Pippa while she was with them," he has told me, "I’d never forgive myself."

Pippa shows me her picture: a stick-figure, wearing pigtails and a polka-dot dress, sitting in a cage. "Here’s my picture of the zoo," she says. "Rodney, do you ever wish you could go wherever you wanted?"

"Yes," I say. Dr. Krantor has warned me that the world is full of owls and snakes and cats and mousetraps, innumerable kinds of death. Dr. Krantor says that I should be happy to live in a cage, with food and water always available; Dr. Krantor says I should be proud of my contribution to science. I’ve told him that I’d be delighted to trade places with him–far be it from me to deny Dr. Krantor his share of luxury and prestige–but he always declines. He has responsibilities in his own world, he tells me. He has to take care of his daughter. Pippa seems to think that he takes care of her in much the same way he takes care of me.

"I’m bored," she says now, pouting. "Rodney, tell me a story."

"Sweetheart," says Dr. Krantor, "the rodent doesn’t know any stories. He’s just a mouse. Only people tell stories."

"But Rodney can talk. Rodney, do you know any stories? Tell me a story, Rodney."

"Once upon a time," I tell her–now where did that odd phrase come from?– "there was a mouse who remembered being a horse."

"Oh, goody!" Pippa claps her hands. "Cinderella! I love that one!"

My whiskers quiver in triumph. "You do? There’s a story about a mouse who was a horse? Really?"

"Of course! Everybody knows Cinderella."

I don’t. "How does it end, Pippa?"

"Oh, it’s a happy ending. The poor girl marries the prince."

I remember nothing about poor girls, or about princes, either, and I can’t say I care. "But what about the horse who was a mouse, Pippa?"

She frowns, wrinkling her nose. She looks a lot like her father when she frowns. "I don’t know. It turns back into a mouse, I think. It’s not important."

"It’s important to me, Pippa."

"Okay," she says, and dutifully trudges across the lab to Dr. Krantor. "Daddy, in Cinderella, what happens to the mouse that turned into a horse when it turns back into a mouse?"

I hear breaking glassware, followed by Dr. Krantor’s footsteps, and then he is standing above my cage and looking down at me. His face is oddly pale. "I don’t know, Pippa. I don’t think anyone knows. It probably got eaten by an owl or a cat or a snake. Or caught in a trap."

"Or equipped with IQ boosters and a vocal synthesizer and stuck in a lab," I tell him.

"It’s just a story," Dr. Krantor says, but he’s frowning. "It’s an impossible story. It’s a story about magic, not about science. Pippa, sweetheart, are you ready to go to the zoo now?"

"Now look," he tells me the next day, "It didn’t happen. It never happened. Stories are about things that haven’t happened. Somebody must have told you the story of Cinderella–"

"Who?" I demand. "Who would have told me? The only people I’ve ever talked to are you and Pippa–"

"You saw it on TV or something, I don’t know. It’s a common story. You could have heard it anywhere. Now look, rodent, you’re a very suggestible little animal and you’re suffering from false memory syndrome. That’s very common too, believe me."

I feel my fur bristling. Very suggestible little animal, indeed!

But I don’t know how I can remember a story I’ve never heard, a story that people knew before I remembered it. And soon I start to have other memories. I remember gnawing the ropes holding a lion to a stone table; I remember frightening an elephant; I remember being blind, and running with two blind companions. I remember wearing human clothing and being in love with a bird named Margalo. Each memory is as vivid and particular as the one about being a horse. Each memory feels utterly real.

I quickly learn that Dr. Krantor doesn’t want to hear about any of this. The only thing he’s interested in is how quickly I can master successively more complicated mazes. So I talk to Pippa instead, when she comes to visit the lab. Pippa knows some of the stories: the poem about the three blind mice, the belief that elephants are afraid of mice. She doesn’t know the others, but she finds out. She asks her mother and her friends, her teachers, the school librarian, and then she reports back to me while Dr. Krantor is on the other side of the lab, tinkering with his computers and mazes.

All of my memories are from human stories. There are also a witch and a wardrobe in the story about the lion; the mouse who is in love with the bird is named Stuart. Pippa asks her mother to read her these stories, and reports that she likes them very much, although the story with the bird in it is the only one where the mouse is really important. And while that story, according to Pippa, ends with Stuart looking for his friend Margalo, the story never says whether or not he ever finds her. The fate of mice seems to be of little importance in human stories, even when the mouse is the hero.

I begin to develop a theory. Dr. Krantor believes that language makes me very good at running mazes, that with language comes the ability to remember the past and anticipate the future, to plan and strategize. To humor him, I talk to myself while I run the mazes; I pause at intersections and ask myself theatrical questions, soliloquizing about the delicious cheese to be found at the end of the ordeal, recounting fond anecdotes of cheeses past. Dr. Krantor loves this. He is writing a paper about how much better I am at the mazes than previous mice, who had IQ boosting but no vocal synthesizers, who were not able to turn their quests for cheese into narrative. Dr. Krantor’s theory is that language brings a quantum leap in the ability to solve problems.

But my theory, which I do not share with Dr. Krantor, is that human language has dragged me into the human world, into human tales about mice. I am trapped in a maze of story, and I do not know how to reach the end of it, nor what is waiting for me there. I do not know if there is cheese at the end of the maze, or an elephant, or a lion on a stone table. And I do not know how to find out.

And then I have another memory. It comes to me one day as I am running the maze.

In this memory I am a mouse named Algernon. I am an extremely smart mouse, a genius mouse; I am even smarter than I am now. I love this memory, and I run even faster than usual, my whiskers quivering. Someone has told a story about a mouse like me! There is a story about a very smart mouse, a story where a very smart mouse is important!

Pippa comes to the lab after school that day, scowling and dragging a backpack of homework with her, and when Dr. Krantor is working on his computer across the room, I tell her about Algernon. She has never heard of Algernon, but she promises to question her sources and report back to me.

The next day, when she comes to the lab, she tells me that the school librarian has heard of the Algernon story, but says that Pippa isn’t old enough to read it yet. "She wouldn’t tell me why," Pippa says. "Maybe the mouse in the story is naked?"

"Mice are always naked," I tell her. "Or else we’re never naked, because we always have our fur, or maybe we’re only naked when we’re born, because we’re furless then. Anyway, we don’t wear clothing, so that can’t be the reason."

"Stuart wears clothing."

"But the three blind mice don’t." My personal opinion is that Stuart’s a sell-out who capitulated to human demands to wear clothing only so that he could be the hero in the story. It didn’t work, of course; the humans couldn’t be bothered to give him a happy ending, or any ending at all, whether he wore clothing or not. His bowing and scraping did him no good.

I suspect that Algernon is non-monogamous, or perhaps that he eats his young, and that this is why the librarian considers the story unsuitable for Pippa. But of course I don’t tell her this, because then her father might forbid her to speak to me altogether. I must maintain my appearance of harmlessness.

Am I a sell-out too? I don’t allow myself to examine that question too closely.

Instead I tell Pippa, "Why don’t you ask your mother to find the story and read it to you?" Since Pippa’s mother doesn’t mind letting her see naked women in the shower, she may not share the librarian’s qualms about whatever misconduct Algernon commits in the story. It makes perfect sense to me that a very smart mouse would do things of which humans would not entirely approve.

"Okay," Pippa says. "The story’s called ‘Flowers for Algernon,’ so it must have a happy ending. Mommy gets flowers from Michael on her birthday."

"Oh, that’s lovely!" I tell Pippa. I’ve never seen humans eating flowers–Pippa favors chocolate and once gave me a piece, which I considered an entirely inadequate substitute for seeds and stems–but my opinion of people rises slightly when I learn this. I’m very optimistic about this story.

The next day, Pippa tells me cheerfully that her mother found a copy of the story, but is reading it herself before she reads it to Pippa, just in case the librarian had a good reason for saying that Pippa shouldn’t read it. This frustrates me, but I have no choice but to accept it. "I told her that you’d had a good dream about it," Pippa says happily. "She was glad."

The next day, Pippa does not come, and Dr. Krantor makes me run the maze until my whiskers are limp with exhaustion. The day after that, Pippa returns. She tells me, frowning, that her mother has finished reading the story, but agrees with the school librarian that Pippa shouldn’t read it. "But I told her she had to: I told her it wasn’t fair not to let me know what happens to Algernon." Her voice drops to a whisper now. "I told her she was being like Daddy, trying to keep me from knowing stuff. And that made her face go all funny, and she said, okay, she’ll start reading it to me tonight."

"Thank you," I tell Pippa. I’m truly touched by her persistence on my behalf, but also a little alarmed: what in the world can have shocked both a staid school librarian and Pippa’s unconventional mother?

It takes me a while to find out. Pippa doesn’t come back to the lab for a week. Dr. Krantor is frantic, and as usual when he’s worried, he talks to me. He paces back and forth in front of my cage. He rants. "She says it’s because she has too much homework, but she can do her homework here! She says it’s because her mother’s taking her to the zoo after school, but how can that be true if she has all that homework? She says it’s because she and her mother and Michael have to plan a trip. A trip! Her mother’s brainwashing her, I know it! Michael’s brainwashing both of them! I’m going to lose Pippa! They’ll flee the country and take her with them! He’s probably a Colombian druglord!"

"Just calm down," I tell Dr. Krantor, although I’m worried too. The string of excuses is clearly fake. I wonder if Pippa’s absence has anything to do with Algernon, but of course I can’t talk about that, because Dr. Krantor doesn’t approve of my interest in human stories.

"Don’t tell me to calm down, rodent! What would you know about it? You don’t have children!"

And whose fault is that? I think sourly. Often have I asked for a companion, a female mouse, but Dr. Krantor believes that a mate would distract me from his mazes, from the quest for cheese.

He storms back to his computer, muttering, and I pace inside my cage the same way Dr. Krantor paced in front of it. What in the world is wrong with Pippa? What in the world happened to Algernon? Was he eaten by a cat, or caught in a trap? Right now I would welcome even the mazes, since they would be a distraction, but Dr. Krantor is working on something else. At last, sick of pacing, I run on my exercise wheel until I am too exhausted to think.

Finally Pippa returns. She is quieter than she was. She avoids me. She sits at the table next to Dr. Krantor’s computer, all the way across the lab, and does her homework. When I stand up on my hind legs, I can see her, clutching her pencil, the tip of her tongue sticking out in concentration. And I see Dr. Krantor frowning at her. He knows she is acting oddly, too. He stands up and looks down at her workbook. "Pippa, sweetheart, why are you working so hard on that? That’s easy. You already know it. Why don’t you go say hello to the rodent? He missed you. We both missed you, you know."

"I have to finish my homework," she says sullenly.

"Pippa," Dr. Krantor says, frowning even more now, "your homework is done. That page is all filled out. Pippa, darling, what’s the matter?"

"Nothing! Leave me alone! I don’t want to be here! I want to go home!"

I’m afraid that she’s going to start crying, but instead, Dr. Krantor does. He stands behind her, bawling, his fists clenched. "It’s Michael, isn’t it! You love Michael more than you love me! Your mother’s brainwashed you! Where are they taking you, Pippa? Where are you going on this trip? Whatever your mother’s said about me is a lie!"

I stare. Dr. Krantor has never had an outburst like this. Pippa, twisted around in her chair, stares too. "Daddy," she says, "it has nothing to do with you. It’s not about you!"

He snuffles furiously and swipes at his face with a paper towel. "Well then," he says, "why don’t you tell me what it’s about?"

"It’s about Algernon!" she says, and now she’s crying, too.

I’m very afraid. Something even worse than a trap or a cat must have happened to Algernon.

It’s Dr. Krantor’s turn to stare. "Algernon? Who’s Algernon? Your mother has a new boyfriend named Algernon? What happened to Michael? Or she has two boyfriends now, Michael and Algernon? Pippa, this is terrible! I have to get you out of there!"

"Algernon the mouse, Daddy!"

Dr. Krantor squints at her. "What?"

And the whole story comes out. Pippa breaks down and tells him everything, hiccupping, as I cower in my cage. Pippa’s upset, and it’s my fault. Dr. Krantor’s going to be furious at me. He won’t let me have any more cheese. He’ll take away my exercise wheel. "That’s why I’ve been staying away," Pippa says. "Because of Algernon. Because of what happens to Algernon. Daddy–"

"It’s just a story," Dr. Krantor says. It’s what I expect him to say. But then he says something I don’t expect. "Pippa, you have to tell the rodent–"

"His name’s Rodney, Daddy!"

"You have to tell Rodney what happened, all right? Because he’s been waiting to find out, and he can hear us talking, and not knowing will make him worry more. It’s just a story, Pippa. Nothing like that has happened to my mice, the ones here in the lab. I promise. Come on. I’ll help you."

Astonished, I watch Dr. Krantor carry Pippa across the lab to my cage. "Pippa," he says when he gets here, "Rodney’s missed you. Say hello to Rodney. Do you want to hold him?"

She snuffles and nods, shyly, and Dr. Krantor says, "Rodney, if Pippa holds you, you won’t run away, right?"

"No," I say, even more astonished than I was before. Pippa’s never been allowed to hold me before, because Dr. Krantor’s afraid that she might drop me, and I represent a huge investment of research dollars. But now Dr. Krantor opens the top of the cage and lifts me out by my tail, the way he does when he’s going to put me in the maze; but instead he puts me in Pippa’s cupped palms, which are very warm. She peers down at me. Her breath is warm too, against my fur, and I see tears still shining in the corners of her eyes.

"See?" Dr. Krantor tells her. "Rodney’s a very healthy mouse. He’s fine, Pippa. There’s nothing wrong with him, even though he’s smart."

I don’t understand this, and nobody’s answering the main question. "What happens to Algernon?" I ask.

"He dies," Pippa says in a tiny voice.

"Oh," I say. Well, I’d deduced as much. "A cat gets him, or a mousetrap?" And Pippa’s face starts to crumple as she strokes my back, and I hear Dr. Krantor sigh.

"Rodney," he says, "In the story ‘Flowers for Algernon,’ the mouse Algernon has been IQ-boosted, the way you are. Only the story was written before that was really possible. Anyway, in the story, the mouse dies as a result of the experiment."

"He dies because he’s smart," Pippa says mournfully. "Except he gets stupid first. The experiment wears off, and he gets stupid again, and then he dies! The flowers are for his grave!"

"Right," Dr. Krantor says. "Now listen to me, you two. It’s just a story. None of my mice have died prematurely as a result of the IQ boosting, and the IQ boosting hasn’t worn off on any of them. All my mice stay smart, and they don’t die any sooner than they would anyway. If anything, they live longer than non-enhanced mice. Okay? Does everybody feel better now?"

"But how did they die?" I ask, alarmed. "How could they die if they were here in their cages, where there aren’t any owls or cats or snakes or mousetraps?"

Dr. Krantor shakes his head. "They just died, Rodney. They died of old age. All mice die, sometime. But they had good lives. I take care of my animals."

"What?" I say stupidly. All mice die? "I’m going to die? Even if there aren’t any cats?"…