Iacta ālea est.
“The die is cast.” (Suetonius, The Life of Julius Caesar, 33).
These words were reportedly said by Julius Caesar when he crossed the Rubicon River into Italy with his victorious armies after his conquest of Gaul, disregarding the Senate’s order to disband his forces. The saying has become symbolic of the state of mind of a person who has made a fateful decision and is prepared to accept the outcome.
From Latin for the New Millennium