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

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.

(i) The speaker of the above lines is Brutus.
(ii) The above lines were spoken when Brutus was speaking at Caesar's funeral. As Brutus was about to step out of the pulpit, he spoke these words.
(iii) It is ironical that Brutus tells the citizens to listen to Antony for Brutus' sake because it was Brutus who had a hand in Caesar's murder and Antony took Caesar's revenge by unearthing Brutus's conspiracy.

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.