To the modern mind, the word Dictator has all sorts of unpleasant associations, and it’s true that most of the ones you’re likely thinking of right now also applied to the rule of Gaius Julius Caesar over Rome and its empire. But that’s not to say that he didn’t achieve good things as well. His rewriting of the Roman constitution created a more unified empire and suppressed revolts in the provinces. On the other hand, it also decreased the power of most Roman institutions while increasing that of the dictator, creating an inherently unstable system – at least, when the dictator was himself unstable, as several of Julius’ successors were (like Nero or Caligula).
Imperial Rome — Aska
“Crossing the Rubicon” is now an expression for passing the point of no return: this is the original incident from which it derives. In 49 BCE, Gaius Julius, at that time just a general and not yet Caesar, led his army across the Rubicon river, which marked the border of Rome: to cross it marked him as a treasonous leader of a revolt against the Roman state. Famously, he is said to have quoted the Greek playwright Menander, saying “alea iacta est” – “the die is cast.”
Julius would be successful in his quest for the leadership of Rome and its empire (much of which, particularly Gaul, added by his own military genius): which is why history knows him best as Julius Caesar.
Rvbicon — Ancient Rites