Becasue he looks only toward the noble cause of things.
It is unnecessary He doesnt want to kill Marc Antony because he doesnt want it to seem as if these conspirators wanted to just kill these political leaders. Brutus believed that it was only necessary to kill Caesar. The reason for that is Brutus thought Rome should remain a republic.
After his speech, Marc Antony stirred the emotions of the crowd by revealing Julius Caesar's will, which bequeathed money and public parks to the citizens of Rome. This revelation incited anger and a desire for revenge against the conspirators who assassinated Caesar. The people, moved by Antony's rhetoric and the display of Caesar's legacy, ultimately turned against Brutus and the other conspirators, leading to chaos in the streets of Rome. Antony's speech effectively galvanized the public and shifted the political landscape in his favor.
Antony just wants the support of Brutus' followers so he can have complete control over Rome.
Brutus
The target was Caesar, and Antony was diverted away from the scene when the assassination took place.
Antony
That Brutus "is a honourable man".
The triumvirate members who fought against Brutus and the conspirators were Octavian and Marc Antony.
to pretend to honor them
Before Brutus agrees to Antony's request to speak at Caesar's funeral, he places the condition that Antony must not blame the conspirators for Caesar's assassination. Brutus wants to ensure that the speech does not incite the crowd against them. Additionally, he insists that Antony must speak after him, allowing Brutus to present the conspirators' rationale first.
Antony handled his emotions better than Brutus. Antony was able to channel his grief and anger into a powerful and strategic speech at Caesar's funeral, rallying the Roman citizens against the conspirators. In contrast, Brutus struggled to manage his emotions and made decisions based on honor and duty rather than practicality, which ultimately led to his downfall.
That Brutus "is a honourable man".
He calls Brutus "an honorable man" distinguishing him as someone who has proper motives while the other conspirators may be wicked
Brutus did not plan to kill Mark Antony although he most certainly thought about it. Brutus knew Antony was loyal to Caesar and that Antony had military skills. Brutus, however, clearly underestimated the damage that Antony could cause. Brutus made a mistake and he would die for his conspiracy against Caesar.
cassius
In his speech against Brutus and the conspirators, Antony emphasizes the betrayal of Julius Caesar by highlighting his positive contributions to Rome and questioning the motives behind the assassination. He repeatedly refers to Brutus as an "honorable man" while juxtaposing this with evidence of Caesar's generosity and the conspirators' treachery. By showcasing Caesar's will, which bequeaths money to the citizens, Antony stirs public emotion and incites doubt about the conspirators' justification for their actions. Ultimately, his rhetoric shifts public opinion against Brutus and the conspirators, igniting a riot.
Brutus's decision to allow Mark Antony to speak at Caesar's funeral underestimated Antony's rhetorical skill and his bond with the Roman populace. By not silencing Antony and permitting him to incite the crowd, Brutus inadvertently fueled a rebellion against the conspirators. Additionally, his failure to take decisive action against Antony after Caesar's assassination contributed to the chaos that ultimately led to Brutus's downfall and the defeat of the conspirators. These choices revealed Brutus's naivety and misguided sense of honor, sealing his tragic fate.