What phrase did Caesar famously declare when crossing the Rubicon?

The phrase "Alea iacta est," which translates to "The die is cast," was famously declared by Julius Caesar when he crossed the Rubicon River in 49 BC. This moment marked a significant turning point in Roman history, as crossing the Rubicon was seen as a declaration of war against the Roman Senate and a pivotal act of insurrection. By using this phrase, Caesar was acknowledging the irrevocable nature of his actions; just as a die, once cast, cannot be retrieved, Caesar understood that he had entered a path from which there was no turning back. This phrase encapsulates the gravity of decision-making in moments of crisis, which is why it has endured in historical and literary contexts as a symbol of commitment to a course of action, particularly one that entails risk and a break from the status quo. The other options pertain to different historical contexts and figures, which makes "Alea iacta est" uniquely relevant to Caesar's dramatic crossing of the Rubicon.