The man who ended the Roman Republic, a genius of war, politics, and letters
Julius Caesar (100–44 BC) was the foremost general and statesman of the late Roman Republic. In nearly a decade he conquered Gaul (roughly modern France), pushing Rome’s frontier to the Atlantic and the Rhine, and left his own Commentaries on the Gallic War — at once a military record and a model of Latin prose. In 49 BC, defying the Senate, he led his army across the Rubicon toward Rome, igniting civil war, defeating Pompey, and becoming dictator for life — effectively ending nearly five centuries of the Republic. He reformed the calendar (the Julian calendar), extended citizenship, and courted the common people, yet his hold on absolute power bred the fear of the senators. On the Ides of March, 44 BC, he was stabbed to death in the Senate house by a group of senators led by Brutus — but the pendulum of the Republic did not swing back; in the hands of his heir Octavian it swung all the way to monarchy. His name, Caesar, became the very word for "emperor" — the German Kaiser and the Russian Tsar both descend from it.
In 49 BC Caesar’s army reached the Rubicon, the river marking Italy’s border. By Roman law no general could lead troops across it into the homeland without committing treason. He hesitated long at the bank, then said "the die is cast" (alea iacta est) and ordered the crossing — a step with no return that lit the civil war. "Crossing the Rubicon" has since become a Western byword for a momentous, irreversible decision.
A soothsayer had warned Caesar to "beware the Ides of March." On that day in 44 BC he went as usual to the Senate and was surrounded and stabbed by dozens of senators; by tradition he saw among them Brutus, whom he had long trusted almost as a son, and sighed "You too, Brutus?" as he fell. The assassins imagined that killing Caesar would save the Republic — but the opposite followed: the people’s fury and the ensuing civil war drove Rome toward monarchy all the faster.
Below are how modern works borrow or reinterpret this name or story — not the original material. The two differ, so keep them apart.