Social Darwinism

Social Darwinism, as represented in the book, is the conversion of biological competition into a social and political principle. It supplies a hierarchy in which the collective is imagined as an organism, human beings are sorted by their supposed usefulness or racial value, and the removal of those deemed harmful is recast as a condition of the community’s health. The concept matters because it links broad social beliefs to the decisions, institutions, and postwar excuses surrounding Josef Mengele’s crimes.

A worldview of competition and collective health

The book places Social Darwinism within a wider German culture in which academics and doctors embraced biological explanations of society, and racial hygiene became popular. In Mengele’s later account of his generation, Darwinism and eugenics had seemed to offer the foundations of a modern, functioning society; biology promised professional standing as well as a framework for interpreting public life. Race and bloodlines, he recalled, had been treated as determinants of law, war, sex, international relations, and medicine. This is presented as an influential social outlook, not as an isolated eccentricity belonging only to Mengele.

That outlook divided people into the productive and the allegedly parasitic, the fit and the supposedly unfit. Mengele described his generation as believing that those considered inferior or unproductive were not fit to live, and portrayed Hitler’s project as a mission to purify the race, heal the people, acquire living space, and perfect humanity. The language of collective health thus concealed a radical inversion: instead of protecting individual lives, the imagined health of the national body was used to justify eliminating people classified as threats to it.

The book also places this biological hierarchy beside other political accounts of social order. Juan Perón’s public vision, for example, rejected both capitalism and communism as systems that diminished the individual and promised a national, social, and Christian compromise between competing needs. That contrast does not make Peronism equivalent to Social Darwinism; rather, it highlights how sharply Mengele’s framework reduced political and moral questions to biology, blood, and the survival of a supposedly superior community.

From doctrine to Auschwitz practice

At Auschwitz, this way of thinking became a method of classification and selection. Mengele later described his duty as protecting an organic biological community, purifying blood, and removing foreign bodies. He claimed that he tried to designate as many arriving prisoners as possible for labor and thereby save lives, while treating those he judged unable to work as people whose immediate killing would spare them suffering. His military-hospital analogy recast the selection of deportees as an unavoidable assessment of who could be saved, rather than as a decision made within a system of persecution and mass murder.

The medical work documented by Miklós Nyiszli exposes the distance between that justification and what the system did. In the experimental barracks, twins and dwarfs underwent painful tests, including blood tests, spinal taps, and transfusions between twins; in some investigations, they were killed at the same time so their bodies could be compared. Chloroform injections were used to kill them, and organs were sent to the Kaiser Wilhelm Institute for Anthropology, Human Heredity and Eugenics in Dahlem, Berlin. The package was marked as urgent and important war material, a bureaucratic designation that presented the transfer of human remains as a scientific and military task.

Nyiszli’s account also depicts Mengele continuing to work on the twins’ dossiers and research in autumn 1944, even as Germany was losing the war. The careful collection of records and attention to a grease stain on a dossier’s cover sit beside the deaths and experiments those files recorded. This contrast shows how professional discipline could coexist with violence when the people under study had already been denied individual standing and reduced to biological material.

Social institutions and material interests

The ideology was not confined to camp doctors. The book describes the enthusiasm of academics and physicians for the political upheavals of the 1930s, the removal of humanists, and the popularity of social Darwinism and racial hygiene across society. It also recounts the exploitation of camp prisoners by major industrial firms and the shipment of gold taken from Jewish victims to the Reichsbank. These details place the doctrine within a wider system in which state power, professional authority, and economic advantage could reinforce one another.

In his later fury over the revocation of his degrees, Mengele extended that accusation of complicity to industrialists and politicians. He complained that companies which had profited from Auschwitz were now living comfortably while he bore the consequences. The complaint does not amount to remorse: it redirects attention from his own actions toward the beneficiaries he regarded as hypocrites. The book’s juxtaposition of institutional profit with his grievance reveals both the breadth of the system and the self-serving limits of his retrospective understanding.

Postwar defense and the collapse of its claims

When Rolf asked what he had done at Auschwitz, Mengele answered by invoking duty, German science, selection, and the biological community. He insisted that he had not created the camp or its killing facilities, described himself as one cog among many, and claimed that he had been legally and morally obliged to obey. When challenged about compassion for the people sent to their deaths, he continued to describe Jews through the language of disease and contamination, denying their membership in humanity. Social Darwinism here functions as more than a theory of competition: it provides the terms through which victims can be dehumanized and responsibility displaced onto orders, law, and an allegedly natural struggle for survival.

The revocation of Mengele’s medical and anthropology degrees in 1964 directly repudiated the professional identity he cherished. The universities of Frankfurt and Munich withdrew the qualifications because of his murders at Auschwitz and his violation of the Hippocratic Oath. He experienced this as an injustice and continued to argue that society had encouraged the biological assumptions behind his actions. His response preserves the central contradiction of his defense: he presents himself as an obedient instrument of a system while also claiming credit for having fulfilled its mission.

The book finally connects this self-exculpation to a broader postwar sense of betrayal among former Nazis. After Adolf Eichmann’s execution, Mengele mourned the man who had not denounced him and accused Germany of abandoning its former servants. This lament is not a reconsideration of the victims’ suffering. It is another reversal of moral perspective, in which the perpetrators appear as the injured party and the society that punishes them becomes the betrayer. Across the account, Social Darwinism’s lasting force lies in this movement from classification to action and then to excuse: human beings are ranked as biological threats, violence is renamed as duty, and the destruction of others is defended as the preservation of a collective whole.