How we cite our quotes: (Act.Scene.Line). Line numbers correspond to the Riverside edition.
Quote #4
CASCA
O, he sits high in all the people's hearts,
And that which would appear offence in us,
His countenance, like richest alchemy,
Will change to virtue and to worthiness.
CASSIUS
Him and his worth and our great need of him
You have right well conceited. (1.3.162-167)
Earlier we saw Cassius try to flatter his friend Brutus into believing that he would make a better Roman leader than Caesar (1.2). Now it seems pretty obvious that Cassius was trying to manipulate his pal, because here he acknowledges that the conspirators want Brutus on their side. He's popular with the commoners and will make the plotters against Caesar look "virtu[ous]" rather than "offen[sive]."
Quote #5
CASSIUS
Caesar said to me 'Dar'st thou, Cassius, now
Leap in with me into this angry flood
And swim to yonder point?' Upon the word,
Accoutred as I was, I plungèd in
And bade him follow; so indeed he did.
The torrent roared, and we did buffet it
With lusty sinews, throwing it aside
And stemming it with hearts of controversy.
But ere we could arrive the point proposed,
Caesar cried 'Help me, Cassius, or I sink!'
I, as Aeneas, our great ancestor,
Did from the flames of Troy upon his shoulder
The old Anchises bear, so from the waves of Tiber
Did I the tired Caesar. And this man
Is now become a god, and Cassius is
A wretched creature and must bend his body
If Caesar carelessly but nod on him. (1.2.109-125)
In this passage Cassius relates a story that suggests that male friendship, from an early age, is marked by potentially deadly competition and rivalry. When a young Caesar double-dog-dared Cassius, his childhood friend, to swim across the Tiber River, it nearly cost Caesar his life. Cassius saved the "wretched creature" from drowning, so it's infuriating that now he has to bow every time he sees him in the street.
Quote #6
CAESAR
Et tu, Brutè?—Then fall, Caesar. (3.1.85)
This is one of the most famous and moving lines in literature. After being stabbed by his so-called pals (33 times, according to Octavius in 5.1), Caesar looks up at his friend and says something like "Even you, Brutus? I thought we were homies!"