He says, "This was the noblest Roman of them all" and "This was a man".
Nothing. Brutus is dead, and any conversation with him would be very one-sided. Antony talks instead to Octavian and Messala who are standing by.
Because he was very noble
His opinion on Marc Antony is that Antony is just the limb of Caesar. There is no point in killing him either. Antony is a friend of Brutus and he seems loyal but then Brutus will soon find out that Antony is a traitor to him and but of course despises him.
Brutus did not give Mark Antony any rules.
After the exeunt of everyone except Brutus and Cassius, Brutus tells Cassius that Brutus is not as athletic as Antony, so Brutus doesn't want to attend that day's race (28-29).
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.
Brutus allowed Anthony to speak at Caesar funeral because he wanted him to eulogize his friend. He also did that because he was fair and compassionate.
Brutus appeals to reason, Antony to emotion.
(Apex) Because of Caesar's ambition.
Brutus is the one that is more democratic. After Caesar gets killed, when Brutus and Antony give the speech to the plebians or villagers, Antony want to make sure Brutus and Cassius get what they deserved for what they did. For Brutus, he wants the govt. to change, and to change Rome into a republic.
Unfortunately not. Brutus thought that without the support of Caesar, Antony would be of no significance. He failed to realize the threat that Antony posed.
Although both Brutus and Antony offered eulogies, Antony offered one tempered with sarcasm and disrepute, while Brutus's was sincere with praise and good will.