Why does the poet come to Brutus's tent in Shakespeare's play, Julius Caesar, in Act Four, scene three?

In Shakespeare's play, Julius Caesar,
the poet enters in Act Four, scene three, to speak to Cassius and Brutus. It would seem
that he is aware that the two generals are fighting, and he comes to stop the
dispute.

When he arrives, the poet speaks to Lucilius,
demanding that he be allowed to see Cassius and Brutus. He believes that because they
are fighting, they should not be left alone.

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POET:

Let
me go in to see the generals.

There is some grudge between
'em, 'tis not meet

They be alone.
 (140)

When Lucilius refuses
to accomodate the poet, the man threatens that only death will keep him from going into
the generals. Cassius hears the disturbance and asks for its cause. At this point, the
poet begins to scold the men for fighting. He tells them to make up and be
friends.

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POET:

For
shame, you generals! What are you thinking?

Love, and be
friends as two such men should
be…

Now that Cassius and
Brutus have made up, it seems that they unite to insult the poet: they make fun of him,
and tell him to leave.

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[The poet] is ridiculed by both men for his crude
verses and
philosophy.

Finally, the two
men seem to be in agreement again.