Why War? Inside the 1932 Einstein-Freud Correspondence on the Roots of Human Conflict

Why War? Inside the 1932 Einstein-Freud Correspondence on the Roots of Human Conflict

In 1932 the League of Nations brought together two of the most famous minds of the twentieth century and asked them to confront a single question: can humanity ever be freed from the threat of war? The result was an exchange of letters between Albert Einstein and Sigmund Freud, published the following year under the title "Why War?" (in German, "Warum Krieg?"). Nearly a century later the correspondence is still read, debated, and assigned in classrooms, because the disagreement at its heart has never been resolved. This article reconstructs what was actually said, who said it, and why the exchange remains relevant.

How the Correspondence Came About

The exchange did not begin as a private conversation between friends. It was commissioned. In 1931 the International Institute of Intellectual Cooperation, an organization affiliated with the League of Nations and based in Paris, invited Einstein to choose a person of his standing and exchange views with that person on a problem of broad public interest. Einstein chose Sigmund Freud, and he chose the subject of war.

The institute's goal was to encourage dialogue among leading intellectuals at a time when the postwar international order was visibly fraying. Einstein, already a world-renowned physicist and an outspoken pacifist, took up the invitation and wrote to Freud in the summer of 1932. Freud, then in his mid-seventies and living in Vienna, replied a few weeks later. The two men had met only briefly before, and their correspondence was shaped more by mutual respect than by close friendship.

The Timing: A World Sliding Toward Catastrophe

The dates matter. Einstein composed his letter on 30 July 1932. Freud sent his reply in September of the same year. The League of Nations published the two letters together in 1933, simultaneously in German, French, and English.

By the time the pamphlet appeared, Adolf Hitler had become German chancellor. The circulation of "Warum Krieg?" was suppressed in Germany, and both authors, each of Jewish heritage, would soon be forced into exile. Einstein left for the United States, and Freud eventually fled to London in 1938. The correspondence therefore stands at a hinge moment in modern history, written just before the collapse of the fragile interwar peace that the League of Nations had tried to protect.

Einstein's Questions

Einstein framed his letter around a deceptively simple problem: is there any way of delivering mankind from the menace of war? He admitted that as a physicist he had no special competence in the human passions, which is precisely why he turned to a psychologist.

His own diagnosis had two parts. First, he pointed to the political machinery of conflict. A small ruling minority, he suggested, holds power over schools, the press, and often the churches, and is able to organize and sway the emotions of the masses toward war. He proposed a practical remedy that he favored throughout his life: the creation of an international body with the authority to settle disputes between nations, a court whose judgments would be binding. This idea echoed the broader hope, associated with Immanuel Kant's essay on perpetual peace, that institutions might one day make war obsolete.

Second, Einstein admitted that institutional fixes were not enough. He sensed that there was something in human beings themselves that responded to the call of war, what he described as a lust for hatred and destruction that lay dormant in ordinary times but could be stirred up and exploited. He asked Freud whether it was possible to so guide the psychological development of people that they would become resistant to such impulses.

Freud's Response

Freud's reply, written from Vienna, refused the easy optimism that Einstein hoped for. He agreed that an international authority with real power could reduce the likelihood of war, but he doubted that such an institution could ever be granted enough strength to enforce its decisions, since states are reluctant to surrender power.

The deeper part of Freud's answer turned inward, toward his theory of the instincts. He described two broad classes of human drive. One he called Eros, the impulse toward life, connection, union, and preservation. The other he associated with destruction and aggression, what is often summarized as the death drive. In Freud's account these two forces are intertwined and neither acts alone. Aggression, he argued, is not an accident or a temporary malfunction; it is a permanent component of human nature.

From this Freud drew a sober conclusion. There was, in his words, no likelihood of being able to suppress humanity's aggressive tendencies entirely. The most one could hope for was to divert that aggression so that it did not have to express itself in war, and to strengthen the bonds of Eros, the emotional ties and shared identifications that hold communities together, as a counterweight.

Civilization as a Restraint on Violence

A striking thread in Freud's letter is his view that civilization itself works against war. The long process of cultural development, he wrote, strengthens the intellect and turns aggression inward, producing the controls and inhibitions that make organized social life possible. People who have internalized these restraints react to war with a deep aversion, not merely an intellectual objection but something closer to physical disgust.

This led Freud to a guardedly hopeful note at the very end. He suggested that whatever fosters the growth of culture works at the same time against war, and he allowed himself to imagine that, in some indefinite future, the spread of civilization might make people increasingly intolerant of organized killing. It was hope grounded in the slow work of culture rather than in any single treaty or institution, and Freud was careful to present it as a possibility rather than a promise.

Two Visions That Never Fully Met

The lasting interest of the correspondence lies in the gap between the two men. Einstein looked outward, toward law, institutions, and the rational reform of the structures that organize political power. He believed that the right arrangement of authority could contain the worst human impulses. Freud looked inward, toward the instinctual life of the individual, and concluded that no external arrangement could ever fully tame what lived inside people.

It would be a mistake to treat this as a simple contest between optimism and pessimism. Einstein was clear eyed about how rulers manipulate populations, and Freud was not without hope about the civilizing power of culture. The two perspectives are better understood as complementary. One asks how to build institutions that reduce the occasions for war, the other asks why human beings keep producing the desire for it.

What Recent Readers Have Drawn From It

Because the correspondence is short and accessible, it has been reinterpreted by each generation according to its own concerns. Scholars of peace and conflict studies often read it as an early articulation of the difference between treating the symptoms of war and treating its causes. Some commentators have used Freud's emphasis on internalized aggression to discuss the psychology of nationalism and propaganda.

It is generally held that the exchange remains valuable less for any concrete solution than for the honesty with which both authors admitted the limits of their own answers. Neither man claimed to have solved the problem. Einstein conceded he was reaching beyond his expertise, and Freud closed by apologizing that his letter might disappoint, since he could offer no comforting prescription.

Why the Exchange Still Matters

The institution that commissioned the letters, the League of Nations, failed within a decade, and the war the authors feared arrived with a scale of destruction that exceeded anything in 1932. That failure is part of why the document endures. It reads now as a warning issued at the edge of catastrophe by two people who could see the danger clearly and still could not agree on how to stop it.

The questions they raised have not gone away. International courts and bodies such as the United Nations now exist, much as Einstein wished, yet they struggle with exactly the problem he and Freud identified: how to give a supranational authority enough power to bind sovereign states. And the psychological dimension Freud insisted on, the way ordinary people can be moved toward hatred when leaders find it useful, remains visible in every modern conflict. The correspondence asks readers to hold both halves of the problem at once, the institutional and the human, which is perhaps the most durable lesson it offers.

How to Read the Original

The text is brief, roughly the length of a long essay, and is widely available in English under the title "Why War?" Readers who want the primary source rather than summaries should look for editions that print both letters in full, since Einstein's framing question and Freud's two-part reply are best understood together. The 1933 League of Nations publication, and the standard English translations that followed, present the exchange as a single connected document, which is how its authors intended it to be read.

FAQ

Who started the Einstein-Freud correspondence and why?

The exchange was commissioned by the International Institute of Intellectual Cooperation, a body affiliated with the League of Nations, which in 1931 invited Einstein to discuss an issue of public importance with a thinker of his choosing. Einstein selected Freud and chose the subject of war, asking whether humanity could ever be freed from the threat of armed conflict.

When was "Why War?" written and published?

Einstein wrote his letter on 30 July 1932, and Freud replied in September 1932. The two letters were published together by the League of Nations in 1933, in German, French, and English, under the title "Why War?" In German the title was "Warum Krieg?" Its circulation was suppressed in Germany after Hitler came to power.

What was Einstein's main argument?

Einstein argued that war is driven both by political structures, in which ruling minorities manipulate the masses, and by a destructive impulse latent in human beings. His practical proposal was an international authority with binding power to settle disputes between nations, an idea related to Kant's vision of a lasting peace.

How did Freud respond?

Freud doubted that any institution could be given enough power to prevent war, and he located the deeper cause in human instinct. He described a permanent tension between Eros, the drive toward life and connection, and a destructive death drive, concluding that aggression cannot be eliminated, only redirected and counterbalanced by stronger human bonds.

Why is the correspondence still studied today?

It frames a debate that remains unresolved: whether war is best addressed through institutions and law, as Einstein hoped, or through an understanding of human psychology, as Freud insisted. Written on the eve of the Second World War, it stands as a candid record of two great thinkers confronting a problem neither could solve.