In this scene, Calpurnia tries to convince Caesar to not go to the Senate today because of her nightmare about Caesar. She believes that it's a foreshadowing of tragedy and begs Caesar to stay at home to prevent any danger.
This scene is significant because Calpurnia's dream is a foreshadowing of what is going to happen to Caesar which is an assassination from the conspirators. The way Caesar reacts to it showed his public self and his private self, at first he pretended as if he was not concerned by it because he says he is not afraid of anything and "Caesar shall go forth!". That is his public self because he presents himself as a mighty bold leader who would never be a coward who doesn't go forth because of a dream. Also, he says "Seeing that death, a necessary end, Will come when it will come." shows that he is not afraid of death or anything that gets on his way. However, when Calpurnia kneels down to beg him to stay, he suddenly changes his decision and decides to stay at home. This shows his private self because although he says he is bold, mighty and won't change his decision, he got easily swayed just by Calpurnia kneeling down. However, he doesn't want to show it outside, therefore he says "And for thy humour I will stay at home." which is I'll stay at home to please you, not for himself but for her.
CAESAR
Nor heaven nor earth have been at peace to-night:
Thrice hath Calpurnia in her sleep cried out,
'Help, ho! they murder Caesar!' Who's within?
CALPURNIA
What mean you, Caesar? think you to walk forth?
You shall not stir out of your house to-day.
CAESAR
Caesar shall forth: the things that threaten'd me
Ne'er look'd but on my back; when they shall see
The face of Caesar, they are vanished.
CALPURNIA
Caesar, I never stood on ceremonies,
Yet now they fright me. There is one within,
Besides the things that we have heard and seen,
Recounts most horrid sights seen by the watch.
A lioness hath whelped in the streets;
And graves have yawn'd, and yielded up their dead;
Fierce fiery warriors fought upon the clouds,
In ranks and squadrons and right form of war,
Which drizzled blood upon the Capitol;
The noise of battle hurtled in the air,
Horses did neigh, and dying men did groan,
And ghosts did shriek and squeal about the streets.
O Caesar! these things are beyond all use,
And I do fear them.
CAESAR
What can be avoided
Whose end is purposed by the mighty gods?
Yet Caesar shall go forth; for these predictions
Are to the world in general as to Caesar.
CALPURNIA
When beggars die, there are no comets seen;
The heavens themselves blaze forth the death of princes.
CAESAR
Cowards die many times before their deaths;
The valiant never taste of death but once.
Of all the wonders that I yet have heard.
It seems to me most strange that men should fear;
Seeing that death, a necessary end,
Will come when it will come.
CAESAR
The gods do this in shame of cowardice:
Caesar should be a beast without a heart,
If he should stay at home to-day for fear.
No, Caesar shall not: danger knows full well
That Caesar is more dangerous than he:
We are two lions litter'd in one day,
And I the elder and more terrible:
And Caesar shall go forth.
CALPURNIA
Alas, my lord,
Your wisdom is consumed in confidence.
Do not go forth to-day: call it my fear
That keeps you in the house, and not your own.
We'll send Mark Antony to the senate-house:
And he shall say you are not well to-day:
Let me, upon my knee, prevail in this.
CAESAR
Mark Antony shall say I am not well,
And, for thy humour, I will stay at home.
Nor heaven nor earth have been at peace to-night:
Thrice hath Calpurnia in her sleep cried out,
'Help, ho! they murder Caesar!' Who's within?
CALPURNIA
What mean you, Caesar? think you to walk forth?
You shall not stir out of your house to-day.
CAESAR
Caesar shall forth: the things that threaten'd me
Ne'er look'd but on my back; when they shall see
The face of Caesar, they are vanished.
CALPURNIA
Caesar, I never stood on ceremonies,
Yet now they fright me. There is one within,
Besides the things that we have heard and seen,
Recounts most horrid sights seen by the watch.
A lioness hath whelped in the streets;
And graves have yawn'd, and yielded up their dead;
Fierce fiery warriors fought upon the clouds,
In ranks and squadrons and right form of war,
Which drizzled blood upon the Capitol;
The noise of battle hurtled in the air,
Horses did neigh, and dying men did groan,
And ghosts did shriek and squeal about the streets.
O Caesar! these things are beyond all use,
And I do fear them.
CAESAR
What can be avoided
Whose end is purposed by the mighty gods?
Yet Caesar shall go forth; for these predictions
Are to the world in general as to Caesar.
CALPURNIA
When beggars die, there are no comets seen;
The heavens themselves blaze forth the death of princes.
CAESAR
Cowards die many times before their deaths;
The valiant never taste of death but once.
Of all the wonders that I yet have heard.
It seems to me most strange that men should fear;
Seeing that death, a necessary end,
Will come when it will come.
CAESAR
The gods do this in shame of cowardice:
Caesar should be a beast without a heart,
If he should stay at home to-day for fear.
No, Caesar shall not: danger knows full well
That Caesar is more dangerous than he:
We are two lions litter'd in one day,
And I the elder and more terrible:
And Caesar shall go forth.
CALPURNIA
Alas, my lord,
Your wisdom is consumed in confidence.
Do not go forth to-day: call it my fear
That keeps you in the house, and not your own.
We'll send Mark Antony to the senate-house:
And he shall say you are not well to-day:
Let me, upon my knee, prevail in this.
CAESAR
Mark Antony shall say I am not well,
And, for thy humour, I will stay at home.