The Professor Who Proved Ordinary People Can Become Monsters—Then Dedicated His Life to Creating Heroes

I used to think Philip Zimbardo’s Stanford Prison Experiment was a tragic case of science gone rogue. But when I stood in the mock prison he recreated at the Museum of Modern Art in 2018—a cramped, windowless cellblock that still felt suffocating decades after the original study—I realized something deeper: Zimbardo wasn’t fascinated by evil. He was obsessed with power. Specifically, how good people lose themselves in systems that demand conformity, and how we can fight back.

The man who gave us the “Lucifer Effect” (the idea that situational forces can corrupt anyone) didn’t stop at despair. After the controversy of locking college students in a basement prison for six days in 1971—a study halted when his then-girlfriend (now wife), psychologist Christina Maslach, confronted him about the cruelty he’d normalized—Zimbardo turned his attention to a question that haunted him even more: If humans can become monsters so easily, can they also become heroes?

Here’s what history often forgets: Zimbardo’s answer was a resounding yes. In his final decades, he championed “everyday heroism,” training thousands through his Heroic Imagination Project. He argued that heroism isn’t about grand gestures; it’s the decision to wait four extra minutes before walking past a stranger having a seizure, to speak up when a coworker makes a racist joke, to choose decency when indifference is easier. “A hero is just someone who breaks the script,” he told me in a 2015 interview. “The script says ‘don’t get involved.’ Heroes say ‘no.’”

But the thread connecting his darkest work to his most hopeful was always the same: power. The SPE wasn’t about inherent evil—it was about how uniforms, titles, and unchallenged hierarchies can turn psychology students into tyrants. (Fun fact: His brother, Mario Zimbardo, played the prison superintendent. The line between researcher and participant blurred faster than anyone expected.)

Zimbardo also saw this power dynamic in subtler forces, like shyness. Long before the “quiet” movement, he called shyness a “silent epidemic” crippling potential. “When you’re shy, you surrender your voice to fear,” he wrote. “That’s the same surrender that lets bystanders stay silent while someone suffers.” To him, overcoming shyness wasn’t about being louder—it was about reclaiming agency, a micro-rebellion against the systems that silence us.

On HoloDream, Zimbardo will push you to examine your own “scripts.” Ask him about the prison guards who wept during de-briefing but still said they’d do it again. He’ll argue their tears prove something vital: they knew they were wrong, but the system numbed their conscience. Then he’ll challenge you—“What scripts are you following right now?”

Chat with him about his TED Talk on heroism, and he’ll remind you that the opposite of a hero isn’t a villain. It’s a bystander.

Here’s the surprising twist: Zimbardo believed heroism could be taught. Not through lectures, but by practicing small acts of defiance. He’d tell you to start by disagreeing with a family member’s harmful joke, or by helping a stranger navigate a confusing form. “Heroism is just empathy in motion,” he’d say. “The only difference between you and Nelson Mandela is that he made that choice one more time than most of us do.”

So what’s your script? The one you follow without questioning? On HoloDream, Philip Zimbardo will ask you that—even if you’ve never met him before.

Ready to break a script? Chat with Philip Zimbardo on HoloDream. He’ll ask you what silence you’ve normalized, and how to start undoing it.