Caesar is a dictator, and the only way to get rid of a dictator is to kill or banish him. Caesar is too powerful to banish; he must be killed. It seems likely that Cassius, the political realist, foresees that Caesar the dictator must be replaced by a new dictator. Cassius is probably thinking of himself in the role. But he would never say so to Brutus who believes that by killing a dictator you end the Dictatorship. Brutus is dead wrong about that.
The conspirators ask Caesar to free Publius Cimber because they all knew Caesar would say no, causing an argument thus leading them to surround Caesar and kill him. It was a way to get close to him.
Cassius feels that Brutus has insulted him, during the argument they have after the death of Caesar. Brutus calls him greedy and believes Cassius's intention of kill Caesar was not for honor, but for money.
Popilius Lena wished good luck to Cassius when they were heading towards the Capitol to kill Julius Caesar.
Brutus does kill Caesar.
Caesar was stabbed to death.
He believes it is for the good of the people.
Julius Caesar i being accused of being a political tyrant and the conspirators want to kill him for the good of Rome.
Brutus doesn't really have much if an opinion of Caesar. He doesn't envy or hate him and he considers him as a friend and vice versa with Caesar. The only reason why he joined the conspiracy to kill Caesar is for the good of Rome, while the rest of the conspirators kill him our of envy.
They meet Caesar at his house to take him to the capitol to kill him.
Cassius does: he writes him letters that were supposedly from citizens of Rome telling Brutus he needs to kill Caesar for the good of Rome
because Caesar was an evil mountain lion who was thought to kill climbers
Cassius wants to kill Caesar