He conquered the known world before he turned thirty, yet could not conquer his own army. That contradiction sits at the heart of Alexander of Macedon: the man who broke the Persian Empire could be stopped by his own soldiers refusing to take another step east.

Born in Pella in 356 BC, Alexander grew up watching his father Philip the Second win battle after battle and worrying there would be nothing left to conquer. At thirteen, Aristotle became his tutor, filling him with Homer's "Iliad" and a hunger for glory that philosophy sharpened rather than calmed. At ten, he had already tamed a horse every other man had refused, and Philip wept with pride, telling his son that Macedon was too small for him.

Philip was assassinated in 336 BC, and Alexander, aged twenty, was proclaimed king on the spot. He moved fast: executing rivals, crushing a Theban revolt by razing the city entirely, then crossing into Asia in 334 BC with roughly forty-eight thousand men and a spear he threw into Persian soil, declaring Asia a gift from the gods.

He smashed the Persian forces at the Granicus river, then broke Darius the Third personally at Issus, where Darius fled and left his own family behind as hostages. Alexander swept south through Tyre and Gaza, besieging both, before entering Egypt, where priests declared him son of the god Amun. He founded Alexandria on the Egyptian coast, a city that would outlast his empire by centuries.

At Gaugamela in 331 BC he shattered Darius for the last time. Darius fled again, was captured by his own satrap Bessus, and fatally stabbed before Alexander could reach him. Alexander gave the dead king a royal funeral, then turned east into Persia, Bactria, and Central Asia, founding cities and fighting guerrilla wars across territory that had never seen a Macedonian soldier.

In 326 BC he crossed into India and defeated the king Porus at the Battle of the Hydaspes in a hard, bloody fight against war elephants. He made Porus an ally and pushed further east... until his army refused to go on. At the Beas river his men mutinied, exhausted after a decade of marching. Alexander, for the first time, had no answer. He turned south and then west.

He reached Babylon in 323 BC, planning it as the capital of his empire and preparing an invasion of Arabia. Then, after nights of heavy drinking, a fever took hold. Over roughly twelve days he weakened until he could no longer speak. His soldiers were allowed to file past him in silence. On either the tenth or eleventh of June 323 BC, Alexander died in the palace of Nebuchadnezzar in Babylon, aged thirty-two.

His generals, asked to whom he left his kingdom, heard him say only "to the strongest", or perhaps nothing at all. Within forty years his empire had fractured into warring successor states. But the Greek language he carried east became the tongue of trade, scripture, and empire for a thousand years after him, long outlasting every border he ever drew.