Caesar ignores the soothsayers warning. This proves that Caesar is arrogant and wont listen to anyone's warnings. Caesar thinks that nothing bad could ever happen to him. He is so clueless about what is about to happen to him. (I:ii:18) "Beware the ides of March."
Act IV: Scene iii
Calpurnia has a bad dream about Caesar and wishes he would not leave the house. Her dream was about the Rome people washing their hands in a fountain of Caesars blood. Calpurnia warns Caesar but he ignores the bad signs. (II:ii:8-9) "What mean you, Caesar? Think you to walk forth? You shall not stir out of your house today."
Act V: Scene v
Caesar is killed by the conspirators. The conspirators believe that Caesar will be dangerous as king of Rome so they take him out before he has the chance. Brutus, Caesar's friend, struck him last.(III:i:82-83) "Why I, that did love Caesar when I struck him, have thus proceeded."
Act III: scene i
Caesars ghost appears to Brutus. Brutus then has his army get up and march to Philippi in the middle of the night. Brutus thinks that his army will win. Until both armies meet at Philippi. Brutus blames every miss-understanding on Caesar. (IV:iii:82) "To tell thee, thou shalt see me at Philippi."
Brutus kills himself by throwing himself on Strato's sword. Then Antony called him the most noble person in Rome. Antony primised him a proper burial. Antony and his army win against Brutus and Octivius. (V:v:50-51) "Farwell, good Strato- Caesar, now be still; I killed not thee with half so good a will."
Even friends can stab you in the back, literally. Brutus, Caesars "friend" stabs Caesar alone with the rest of the conspirators. Not only did Caesar die with 33 stab wounds, he dies with a broken heart.