On June 28, 2026, a 19th-century illustration of Thucydides’ “The Strong Do What They Can—and Suffer What They Must” resurfaced in a Foreign Affairs article, reigniting debates about the ancient Greek historian’s grim worldview. The phrase, often misattributed to power dynamics in modern geopolitics, originates from Thucydides’ 5th-century BCE chronicle of the Peloponnesian War, where he observed that “the strong do what they can and the weak suffer what they must.” But the original context—rooted in Athens’ brutal suppression of Melos during the Peloponnesian War—reveals a far more complex meditation on power, morality, and human nature than contemporary shorthand suggests.
The Origins of a Dark Maxim
Thucydides, a general and historian from Athens, recorded the 415 BCE siege of Melos as a case study in realpolitik. The Athenian delegation demanded the island’s surrender, arguing that “the strong do what they can and the weak suffer what they must.” The Melians, refusing to submit, were subsequently slaughtered, their city destroyed. This episode, chronicled in Book 5 of *History of the Peloponnesian War*, is not merely a statement of power but a critique of the moral decay inherent in imperial ambition. “Thucydides isn’t endorsing tyranny,” explains Dr. Paul Cartledge, a Cambridge University historian specializing in ancient Greece. “He’s exposing the hypocrisy of those who claim to act in the name of justice while perpetuating violence.”
The Melian Dialogue—a fictionalized but pivotal exchange between Athenian envoys and Melian representatives—epitomizes this tension. The Athenians, invoking necessity, argue that strength defines survival, while the Melians cling to ideals of self-determination. Thucydides’ narrative, however, underscores the futility of such ideals in a world governed by power. “He’s not a moralist,” says Dr. Sarah Pomeroy, a classicist at the City University of New York. “He’s a realist who documents how power corrupts, not just the powerful, but the entire system.”
Modern Resonances of an Ancient Insight
Today, the phrase “the strong do what they can” is frequently invoked to describe everything from corporate monopolies to U.S. foreign policy. Yet its modern usage often strips it of the ethical questions Thucydides embedded. In 2023, for instance, a bipartisan group of U.S. lawmakers cited the maxim to justify economic sanctions against smaller nations, arguing that “stronger economies must assert their influence.” Such interpretations, however, diverge sharply from Thucydides’ original intent. “He was warning against the illusion of moral superiority,” notes Dr. Niall Ferguson, a Harvard historian. “When you claim to act for the greater good, you’re still part of the same power structure that dehumanizes the weak.”
Recent geopolitical events highlight the enduring relevance of Thucydides’ insight. The 2022 Russian invasion of Ukraine, for example, has been framed by some analysts as a modern-day Melian scenario, where a larger power imposes its will on a smaller state. “The parallels are chilling,” says Dr. Maria Todorova, a Bulgarian political scientist. “But Thucydides’ work reminds us that such actions are not just about strength—they’re about the erosion of collective moral responsibility.”
How the Tech Sector Absorbs the Shock
Even in the corporate world, Thucydides’ maxim finds echoes. Silicon Valley’s consolidation of power—exemplified by the dominance of tech giants like Google and Amazon—has sparked debates about whether “strong” companies are merely exercising their right to thrive. “The language of inevitability is dangerously familiar,” says Dr. Cathy O’Neil, a data scientist and author of *Weapons of Math Destruction*. “When platforms claim they’re ‘winning’ through innovation, they’re often masking the exploitation of smaller competitors and users.”
This dynamic is not new. In the 1990s, Microsoft’s anti-competitive practices drew comparisons to Athenian imperialism, with critics arguing that the company’s dominance stifled innovation. “Thucydides’ warning about power’s corrupting influence is as relevant now as it was 2,500 years ago,” O’Neil adds. “The question isn’t whether the strong will act—they will. The question is whether we, as a society, will allow them to do so without accountability.”
The Ethical Cost of Power
Thucydides’ work remains a touchstone for discussions on ethics in power. His analysis of Athens’ decline—marked by hubris, fear, and the loss of civic virtue—offers a cautionary tale. “He’s showing that power without moral restraint is self-destructive,” says Dr. Josiah Ober, a political theorist at Stanford. “The Athenians didn’t just destroy Melos; they destroyed their own democracy.”
This lesson resonates in contemporary debates about authoritarianism. In 2025, a UN report on global governance cited Thucydides’ insights to argue that “unchecked power leads to systemic collapse.” The report noted that nations prioritizing short-term gains over long-term stability risk repeating the cycles of violence and decay Thucydides documented. “His work isn’t just history—it’s a blueprint for understanding how power dynamics shape our world,” Ober says.
Why This Matters Today
As global power structures shift, Thucydides’ maxim serves as both a mirror and a warning. The 2026 Foreign Affairs article, while sparking renewed interest, also revealed gaps in public understanding. Many readers mis
