The soothsayer warns Caesar of the ides of March. Caesar wants the soothsayer to stand before him. This is important because the ides of march is the 15 of the month which on that day it has religious observations. The soothsayer gives the warning to warn him of ominous meaning. " Beware the ides of March" ( I: ii: ln 15).
Act IV Scene III
Brutus talks about killing Antony. They want to kill Antony but they talk about killing Caesar. They think killing Caesar will stop the problems. Without Caesar Antony is nothing "Caesar must bleed for it"(II: I: ln 170-171).
Act V Scene V
Caesar dies. Brutus and Antony say things about Caesar dying and how he shouldn't have died. It's important because he's the main character. Losing him changed a lot. They start to put him above all and say how mighty he was. " With the most noble blood of all this world"( III: I: ln 150-156).
Don't be too arrogant.
Caesar's ghost comes to visit. He comes to tell Brutus they'll see each other again. Brutus still seeks and requires comfort. Brutus becomes alone with Caesar's ghost. " To tell thee thou shall see me at Phillipi" ( IV: III: ln 280-283).
Brutus kills himself due to being defeated. The ghost of Caesar appeared to him on the battlefield. He says that the time has come for him to die. Brutus declares that in killing himself he acts on motives twice as pure as those with which he killed Caesar. " Farewell good Strato - Caesar now be still: I killed not thee with half so good at will" ( V: V: ln 50-51).
Caesar gets killed . The reason he got killed was because he thought way too highly of himself. If Caesar would have thought of peoples feelings he might have stayed alive. Also if he would have listened to the soothsayer. " O mighty Caesar! Dost thou lie so low?" (III: I: ln 147).