Latest / Marcus Aurelius: Rome's Philosopher King — Fexingo History / Marcus Aurelius and the Stoic's Dream of a Persian War
Transcript
- Lucas: So we've talked a lot about Marcus on the Danube, fighting the Marcomanni and the Quadi. But there's another frontier that almost pulled him east — a war he inherited but never fought. I'm talking about the Parthian campaign. Luna: Wait, I thought Lucius Verus handled the Parthian War while Marcus stayed in Rome. Lucas: Exactly right. When Marcus became emperor in 161 AD, one of his first moves was to make Lucius Verus his co-emperor. Almost immediately, the Parthian king Vologases IV invaded Armenia and Syria. Lucius was sent east to command, and he did win — sacked the Parthian capital Ctesiphon in 165. But Marcus never set foot on that campaign. Still, he always intended to go himself after the Danube was settled. Luna: Do we know why he wanted to go personally? It's a huge risk for an emperor to leave Rome. Lucas: Absolutely. Partly it was about military glory — Roman emperors were expected to lead armies. But there's also a Stoic angle. Marcus writes in the Meditations about the duty of a ruler to be present where he's needed. He saw the eastern frontier as unresolved. The peace Lucius made was fragile; the plague had devastated the legions there, and the client kingdoms like Osroene were wavering. Lucas: Osroene was a buffer state centered on Edessa — modern Şanlıurfa in Turkey. It was caught between Rome and Parthia. The king, Ma'nu VIII, had sided with Rome during Lucius's campaign, but after the plague hit, he started hedging his bets. If Marcus had gone east, he'd have had to secure that loyalty. Luna: And he never got the chance because the Marcomannic Wars blew up. Lucas: Exactly. In 166, just as Lucius was celebrating his triumph, the Marcomanni and Quadi crossed the Danube. That became Marcus's war. He spent the rest of his life on that frontier, dying in Vindobona — Vienna — in 180. The eastern campaign was shelved permanently. Lucas: But here's what fascinates me: there's evidence Marcus was still planning it as late as 175. Cassius Dio tells us that after the revolt of Avidius Cassius — who was governor of Syria — Marcus traveled east to restore order. He visited Athens, then Syria, and some scholars think he was scouting the region for a future offensive. Luna: So he was literally standing at the edge of Parthia, ten years into his reign, and still chose not to invade. Lucas: Right. And that's the Stoic core of it. Marcus wasn't a conqueror like Trajan. He believed in defending what Rome had, not expanding for glory. In the Meditations, he writes: 'The best revenge is to be unlike him who performed the injury.' He saw aggression as a kind of moral failure. So he held the line on the Danube, maintained peace in the East through diplomacy, and never launched that grand campaign. Lucas: There's also a practical reason: the Antonine Plague had devastated the army. Dio says that in some legions, like the Legio XII Fulminata stationed at Melitene in Cappadocia, losses were so severe they couldn't field a full cohort. An invasion of Parthia required massive logistics — supply lines across the Euphrates, siege trains, cavalry. Marcus couldn't spare the men. Luna: And the plague was coming back with the soldiers from the East, wasn't it? Lucas: Exactly. The very army that returned from Lucius's victory brought the plague with them. It spread through the empire for the next fifteen years. So going east would have meant marching into the epicenter of the disease. Marcus was too pragmatic for that. Lucas: But here's a twist: Marcus did plan for a successor who might finish the job. He elevated Commodus to co-emperor in 177, and Commodus was with him on the Danube. Some think Marcus intended Commodus to take command of the eastern war once the Danube was pacified. But Commodus had no interest — he made peace with the Marcomanni and spent his reign in Rome. Luna: So the dream of a Parthian campaign died with Marcus. Lucas: Pretty much. It's one of the great 'what ifs' of Roman history. If Marcus had gone east, could he have stabilized the frontier permanently? Or would it have overstretched the empire, leading to crisis sooner? We'll never know. But it shows that even a philosopher king had to make hard choices about where to spend his limited resources. Lucas: And speaking of limited resources — you know, if this conversation today was worth a coffee to you, there's a link for that. It's buy me a coffee dot com slash fexingo. Smallest ask possible, and it helps us keep these conversations ad-free. Luna: Yeah, honestly, the fact that you guys do this without ads is remarkable. It's a nice way to say thanks. Lucas: Exactly. So anyway — back to Marcus. What I find really telling is that he never even wrote about Parthia in the Meditations. The whole work is focused on the present moment, on inner virtue. He doesn't dwell on future campaigns or past glories. That, to me, is the ultimate Stoic move. Luna: He truly lived his philosophy. Lucas: He did. And that's why, even though he never fought that war, his choice not to is as instructive as any battle. He taught us that sometimes the most powerful thing a leader can do is decide what not to pursue.