Cassius tells Brutus not to allow Antony to speak at Caesar’s funeral because he feared that Antony would use his superb oratorical skills to sway the masses against the conspirators and undo all their plans.

Antony's speech undermines the conspirators even while it appears deferential to them. He manages to turn the mob against the conspirators. Antony's speech was emotional and cleverly appealed to the emotional appeals of the mob. Antony uses many rhetorical questions to persuade the people to go against the conspirators and support him and Caesar's goals. This entire speech won over the crowd and turned them against the conspirators. When Antony delivered this speech, his words melted with those of Caesar's to rouse the masses against the injustice of the assassination. This is how Mark Antony was successful in setting mischief afoot.

a) Caesar is planning to go to the senate at the Capitol.

b) The ‘things’ refers to his enemies.

c) The word ‘vanished’ means the act of disappearing

Yes, I agree with Brutus when he says the given statement to justify his reasons for assassinating Caesar. Brutus was a patriotic man. To him, the safety of the Romans was more important than anything else. His sole reason for joining the conspiracy was that he thought Rome would be ruined if Caesar was crowned. He had no personal grudges against Caesar; rather, he loved him dearly. But he sacrificed his love for Caesar to save his countrymen. The following lines spoken by Brutus prove this – 'As Caesar loved me, I weep for him; as he was fortunate, I rejoice at it; as he was valiant, I honour him: but, as he was ambitious, I slew him'.

Brutus also says at the end of his speech, '— as I slew my best lover for the good of Rome, I have the same dagger for myself, when it shall please my country to need my death.'
When Brutus says, 'Not that I love Caesar less, but I loved Rome more'., he displays idealism and nobility.

The Ends do not justify the Means

Good morning to all of you. I am here today to deliver a speech on the topic 'Ends do not justify the means.'
The ends are only justified by the means when the end is the ultimate moral correctness and the means correlate with the just end. Though as individuals, the means may be morally wrong, when performed for the benefit of the just end, the means can earn their moral correctness. If you have high, noble, important goal, you are free to resort to anything, however immoral it seems even to yourself.  History shows rather clearly that any ideology speaking about building a better future, no matter what there is to be done in order to achieve it, if ever come to power, start moving towards this better future in a rather queer, yet very energetic way, which usually involved murdering as many people as possible in as many ways as it is imaginable. Hitler wanted to resurrect his country and lead it to world domination; Lenin offered land to the poor and so on. In the end, it always was the bloodbath and nothing more.
I would like to end my speech by reminding all my friends that we must be careful of the means that we take to our goals.

Thank you.