At three in the morning, inside a freezing wooden barrack in Auschwitz, a ten-year-old girl woke with a fever so intense she could barely open her eyes. Her body felt as though it were on fire. Her legs were swollen. Her twin sister, Miriam, sat beside her in fear. Two days earlier, a German doctor named Josef Mengele had injected an unknown substance into her arm. No one explained what it was. No one explained anything.
The next morning, Mengele entered the infirmary, glanced at her chart, and, according to her later testimony, said with chilling indifference: “What a pity she is so young. She has only two weeks to live.” Eva understood German. She heard every word. Later she overheard guards discussing what would happen if she died: if one twin died, the other would also be killed so both bodies could be examined together.
Eva was ten years old. Miriam was ten years old. In that moment Eva formed a decision that would stay with her for the rest of her life: If I die, my sister dies too. I am not going to die.
That child was Eva Mozes Kor, and her story remains one of the most powerful survivor testimonies from Auschwitz. It is a story about family, terror, medical abuse, survival, silence, memory, and a form of forgiveness that would later divide even other survivors. Above all, it is a story about refusing to surrender one’s humanity.
Arrival at Auschwitz
In May 1944, the Mozes family was taken from their village along with many other Jewish families from the region. They were forced into cattle cars under conditions of extreme overcrowding, with little air, little water, and no idea where they were being taken. The journey seemed endless.
When the train doors finally opened, they were at Auschwitz-Birkenau.
Eva later described the shock of that first moment: the cold air, the confusion, the noise, the smell, the dogs, the shouted orders in German, the speed with which people were divided into lines. Families were separated in seconds. Decisions about life and death were made with a glance.
Eva turned for only a moment, trying to understand where she was. When she looked again, her father and her two older sisters were gone. She would never see them again.
Eva and Miriam clung to their mother. The three of them cried, trying to stay together in the chaos. Then a man moved through the crowd calling out one word over and over: “Zwillinge! Zwillinge!” — “Twins! Twins!”
He stopped in front of them.
He looked directly at the girls and asked their mother whether they were twins. Eva’s mother hesitated. She sensed danger, even if she did not know exactly what form it would take. Quietly, she asked whether being twins was good. The man answered yes.
She said yes.
That answer changed everything. A soldier immediately pulled the mother away in one direction while Eva and Miriam were taken in another. The girls cried. Their mother cried. Eva later said the image of her mother reaching toward them in desperation remained fixed in her mind forever.
In thirty minutes, she lost her family, her home, and the world she knew. Only she and Miriam remained.
They had not been selected for safety. They had been selected for experimentation.
Mengele and the Twins
The man who had called for twins was Josef Mengele, an SS doctor whose name would become permanently associated with some of the most notorious abuses committed at Auschwitz. He was deeply interested in twins, believing that studying them could unlock answers about heredity and help support Nazi racial ideology.
For that purpose, he needed children.
According to records and later research, roughly 1,500 sets of twins were subjected to Mengele’s experiments. Fewer than 200 individuals are believed to have survived. The numbers themselves convey the scale of what happened.
Eva and Miriam became known as “Mengele twins,” a label they would only fully understand later.
Every morning, Mengele reportedly conducted roll call among the twins. The children were lined up, observed, counted, and assessed. They were not treated as children but as specimens. Eva recalled being forced to stand unclothed for long periods while doctors measured and compared every part of their bodies.
On certain days, she and Miriam were taken to rooms where they were measured for hours at a time. Height, head size, arm length, body proportions—everything was recorded. The comparisons between one twin and the other were central to the process.
On other days came blood tests and injections. Eva recalled that her arms were tightly bound while blood was drawn from one arm and multiple injections were administered into the other. She said she never knew what the substances were. No explanation was provided.
It became a routine of fear.
The Illness
After one round of injections, Eva became gravely ill. She developed a very high fever. Her arms and legs became painfully swollen. Red spots appeared on her body. At the next visit, instead of continuing the usual routine, camp doctors took her temperature and sent her to the infirmary.
But “hospital” in Auschwitz did not mean treatment in any humane sense. It was another barrack filled with people who were desperately sick and barely alive.
The next morning, Mengele entered with several doctors, looked at Eva’s chart, and made the remark that she had only two weeks left to live.
Eva later said that what followed is difficult even to describe. Her clearest memory was of crawling across the floor toward a water tap. She was too weak to walk. She moved inch by inch, losing consciousness and waking again, repeating one phrase to herself: “I must survive. I must survive.”
Two weeks later, the fever broke.
She began slowly to regain strength. It took several more weeks before her temperature returned to normal and she was sent back to the twins’ barrack.
When she returned, she found Miriam sitting quietly on a bed. Eva asked what had happened while she had been gone. Miriam replied only: “I can’t talk about it. I won’t talk about it.”
And for decades, she did not.
Silence After Survival
After the war and liberation, Eva and Miriam lived on. But like many survivors, they did not speak openly about what had happened for a very long time.
Eva later said that for forty years, the twins hardly discussed Auschwitz with each other. The silence was part protection, part trauma, part exhaustion. Some experiences are so overwhelming that language itself feels too small to hold them.
Eventually, Eva asked the question she had carried since childhood. Did Miriam remember the period when Eva had been taken to the infirmary? Miriam said yes.
Then Eva asked what had happened to Miriam during those two weeks.
Miriam answered that she had been under constant Nazi medical supervision the entire time. She was observed, measured, and monitored continuously while Eva was expected to die. Once the two-week period passed and Eva survived, Miriam was returned to the laboratories and subjected to more injections and procedures.
Years later, after Miriam was an adult living in Israel, married and building a family, long-term health problems began to surface.
During pregnancy, she developed severe kidney infections that resisted treatment. Further medical investigation revealed something deeply troubling: her kidneys had never developed beyond the size of those of a ten-year-old child.
The damage appeared to trace back to Auschwitz.
Eva pleaded with her sister not to risk further pregnancies, but Miriam chose to continue building her family. Over time, her kidneys deteriorated. In 1987 they failed completely.
Eva donated one of her own kidneys to Miriam.
It was an act of sisterhood as profound as survival itself. But the transplant did not end Miriam’s health struggles. Later, doctors found cancerous polyps in her bladder. They wanted access to Auschwitz medical archives in hopes of learning what substances had been used on the twins as children. Eva and Miriam searched records and institutions in multiple countries, but no documentation answered the question that mattered most: What had been done to them?
Without that knowledge, treatment remained incomplete.
Miriam died on June 6, 1993.
The Unexpected Meeting With Dr. Hans Münch
Not long after Miriam’s death, Eva received an unexpected phone call. A professor from Boston invited her to speak. Then came a request that stunned her: he asked whether she could bring a Nazi doctor.
At first the idea seemed absurd. But Eva remembered that she and Miriam had appeared in a German documentary in 1992 about Mengele’s twins, and in that film there had been a former Auschwitz doctor named Dr. Hans Münch.
Eva contacted him.
Münch declined to travel, but he invited her to visit him in Germany. She accepted.
During their meeting, Eva asked him directly whether he had seen how the gas chambers operated. Münch answered yes. He described what he had witnessed and acknowledged that the memory remained a nightmare he carried every day. He explained that he had observed through a small viewing opening and later signed documents recording the number of those who had been killed in each session.
For Eva, this mattered enormously. Here was a former Nazi doctor willing to confirm, in writing, what he had seen. In an era when Holocaust denial persisted, such a statement would be powerful evidence from within the Nazi system itself.
She asked Münch to accompany her back to Auschwitz for the 50th anniversary of liberation in 1995 and to sign a document there confirming his testimony.
He agreed immediately.
The Question of Forgiveness
Eva wanted to thank him for agreeing to do this. But how does a Holocaust survivor thank a former Nazi doctor? The question sat uneasily in her mind.
Months later, she woke with an unexpected idea: What if I wrote a letter of forgiveness to Dr. Münch?
The thought startled her. Yet it also felt important. Not because Münch deserved absolution, but because the act itself might mean something.
Eva later said that this was the moment she discovered she had the power to forgive—a power that belonged to her, not to the people who had harmed her. She had lived for decades as someone deeply wounded by what others had done. Suddenly she felt there was one thing they had never taken from her: the power to decide how she would relate to the past.
Writing the letter was not easy. It took months. She revised it, struggled with it, and finally brought it to an old English teacher for help refining the text.
The teacher read it and then told her something that changed the course of Eva’s thinking: Your problem is not with Dr. Münch. Your problem is with Dr. Mengele.
That was harder. Much harder.
Eva was not prepared to forgive Josef Mengele. The idea felt impossible. Her teacher suggested an exercise: go home, imagine Mengele in the room, and tell him what you feel.
Eva did.
She sat alone, took out a dictionary, selected a series of harsh words, and spoke them aloud to the imagined presence of Mengele. She released decades of anger. Then, at the end, she said: “Despite all this, I forgive you.”
What she felt next surprised her.
She felt relief. Not approval. Not forgetfulness. Not reconciliation. Relief.
She realized that forgiveness, as she understood it, did not excuse the crime or lessen the horror. It simply ended the hold the perpetrators had on her inner life. For the first time, she felt that she—not Mengele, not Auschwitz, not the Nazis—had the final word over her own spirit.
Return to Auschwitz
In January 1995, fifty years after liberation, Eva returned to Auschwitz. Dr. Hans Münch came with his family. Eva brought her own children.
There, near the ruins of the gas chamber, Eva read a declaration of amnesty and forgiveness. Münch signed his statement confirming what he had witnessed. Eva signed hers.
At that moment, she said, she felt free—free from Auschwitz in a way she had never imagined possible.
Many survivors strongly disagreed with her. Some still do. They argued that forgiveness of Nazi perpetrators was unacceptable, that it risked moral confusion or historical distortion. Eva understood their anger and never demanded that anyone else follow her path.
But she insisted on one point: forgiveness was for the victim, not for the perpetrator.
For her, it was an act of self-liberation.
A Life of Testimony
Eva Mozes Kor spent the rest of her life speaking publicly about the Holocaust, the twins of Auschwitz, and the need for historical truth. She founded the CANDLES Holocaust Museum and Education Center in Terre Haute, Indiana. The name stood for Children of Auschwitz Nazi Deadly Lab Experiments Survivors.
She gave lectures in schools, universities, museums, and conferences. She educated young people, confronted denial, and made sure that the names, voices, and experiences of survivors were not lost.
Her testimony reached people not only because of what she suffered, but because of the clarity with which she thought about survival, memory, and healing. She never minimized what had happened. She never asked people to forget. She only argued that survivors had the right to choose how to live with what could never be undone.
Eva Mozes Kor died on July 4, 2019, at the age of 85, while on an educational trip in Poland near Auschwitz—the place where she had nearly died at age ten.
What Her Story Means
Eva’s story is not only about Auschwitz, though Auschwitz stands at its center. It is also about endurance, sisterhood, trauma, and the struggle to reclaim agency after extreme dehumanization.
She lost her family. She and Miriam were used in medical abuse disguised as science. They carried physical and emotional consequences for decades. Yet Eva continued to speak, to teach, and to define her own response.
Her final message was direct: we cannot change what happened, but we can choose how we relate to it.
That does not erase history. It does not soften responsibility. It does not reduce the crimes. It only refuses to let hatred remain the last force shaping a survivor’s life.
Eva Mozes Kor survived because, as a child crawling across the floor of a barrack in Auschwitz, she repeated one sentence to herself: I must survive.
She did survive.
And then she did something equally remarkable. She lived, she testified, and she insisted on remaining human in the face of a system designed to erase humanity altogether.
That may be the deepest form of resistance her story offers. Not only survival, but the refusal to let cruelty write the final chapter.