During the Roman Republic, the river Rubicon acted as a sort of frontier line between the Roman province of Cisalpine Gaul to the northeast and Italy proper, controlled directly by Rome, to the south.
In 49 BC, perhaps on January 10, Julius Caesar led a single legion, Legio XIII Gemina, south over the Rubicon from Cisalpine Gaul into Italy. In doing so, he deliberately broke the law limiting his imperium, his authority to control his army.
As he led his army across the Rubicon river into Central Italy, Julius Caesar is credited to having said the following words, “Alea iacta est”.
In 336 B.C., a brash 20-year-old prince visited the Greek city-state of Corinth. During his stay, the prince visited the philosopher Diogenes of Sinope, one of the founders of the Cynic philosophy.
The philosopher was quite a controversial character, infamous for his open criticism of Plato and his rather shocking lifestyle; he begged for a living and often slept in a large ceramic jar, or pithos, near the gymnasium in Corinth.