Decius knows what Caesar likes to hear . He knows that Caesar could easily be flattered by words of praise. So, he used such a language which flattered Caesar completely whereas Calphurnia was very afrid for her husband's well-being. So, her language and tone did not suit Caesar's way of thinking and he thought that listening to the wife and staying back was the act of a coward, which he never wanted himself to be considered as so. Therefore, he went away with Decius.
Decius appeals to Caesar's ego and ambition by reinterpreting Calpurnia's dream in a positive light, playing to Caesar's desire to be seen as invincible and powerful. Decius is able to manipulate Caesar's vanity and pride to convince him to go to the Senate, while Calpurnia's approach of appealing to Caesar's emotions and fears was not as effective in persuading him.
Decius was more successful because Decius provoked Caesar that people may thought him coward that he was scared by listening his wife Culpurnia
Decius manipulates Caesar by reinterpreting Calpurnia's bad dream and convincing Caesar that the Senate will be crowned him as a king the next day. This flattery appeals to Caesar's ego, ultimately persuading him to go to the Capitol on the Ides of March.
In Shakespeare's play "Julius Caesar," Decius re-interprets Calpurnia's dream by convincing Caesar that it actually symbolizes Rome being revitalized by his blood. Decius uses flattery and manipulation to persuade Caesar to ignore Calpurnia's warnings about staying home on the day of his assassination.
Calpurnia
Decius uses three ploys to convince Caesar that Calpurnia has misinterpreted her dreams and the recent omens.
Calpurnia believes that it symbolizes Caesar's death. Decius, on the other hand, interprets it as meaning that the Romans draw sustenance from Caesar, that they "suck reviving blood" from him. This answer suits Caesar's egotism well, but it is contrived to get him to ignore the dream by Decius who is one of the conspirators. Calpurnia's interpretation was correct.
calpurnia is the one who warns caesar not to go to the senate on the day he dies
Calpurnia interprets the dream as a warning for her husband, Julius Caesar, to stay home on the Ides of March. She sees the dream as a bad omen. On the other hand, Decius interprets the dream as a positive sign, suggesting Caesar is invincible and should attend the Senate meeting where he will be crowned.
Decius interprets Calphurnia's dream as a way to ersuade Caesar to come out of his house instead of hiding. He tells him that the blood in the dream does not mean death but a way of energizing Rome and that all of his men will laugh at him for believing in such a foolish thing.
Calpurnia had a dream [foreshadowing] of basically Caesar's death; she pleaded with him to stay home. However, Decius, who came to retrieve Caesar, put a different interpretation on Calpurnia's dream and Caesar went ahead and died.
Decius
Decius tells Caesar that he will burn his house unless he goes to the capitol.