* Power can be seductive and corrupting. Caesar's ambition for power ultimately leads to his downfall. He becomes arrogant and dismissive of those around him, and he ultimately makes decisions that cost him his life.
* Be wary of political manipulation. Cassius and Brutus are able to convince many of the other senators to join their conspiracy against Caesar by appealing to their fears of his growing power and ambition. They use false information and emotional appeals to sway their opinion.
* Political infighting can have devastating consequences. The power struggle between Caesar and the Senate ultimately leads to a civil war that decimates the Roman Republic and paves the way for the rise of the Roman Empire.
* Betrayal is a powerful force. Brutus, who is one of Caesar's closest friends, ultimately betrays him by joining the conspiracy to assassinate him. Brutus's betrayal is especially devastating because it shows that even those closest to us can turn against us.
* Fate is an inescapable force. Despite all of Caesar's efforts to control his destiny, he is ultimately defeated by the forces of fate. His death marks the end of the Roman Republic and the beginning of a new era in Roman history.