If you read Shakespeare, you know that almost all of his plays have at least one famous speech. The Merchant of Venice has two!
The first is Shylock responding to Salario and Salarino's taunting and inquiring about the bond. Shylock responds with the great, although mean, response. He talks of how he has no use for flesh and only wants it to satisfy his revenge. He also says he will learn from Christian example and will get his revenge. He is, in a way, telling the Christians they reap what they sow.
To bait fish withal: if it will feed nothing else,
it will feed my revenge. He hath disgraced me, and
hindered me half a million; laughed at my losses,
mocked at my gains, scorned my nation, thwarted my
bargains, cooled my friends, heated mine
enemies; and what's his reason? I am a Jew. Hath
not a Jew eyes? hath not a Jew hands, organs,
dimensions, senses, affections, passions? fed with
the same food, hurt with the same weapons, subject
to the same diseases, healed by the same means,
warmed and cooled by the same winter and summer, as
a Christian is? If you prick us, do we not bleed?
if you tickle us, do we not laugh? if you poison
us, do we not die? and if you wrong us, shall we not
revenge? If we are like you in the rest, we will
resemble you in that. If a Jew wrong a Christian,
what is his humility? Revenge. If a Christian
wrong a Jew, what should his sufferance be by
Christian example? Why, revenge. The villany you
teach me, I will execute, and it shall go hard but I
will better the instruction.
The next speech is known as the quality of mercy speech and is the most famous speech in this play. Everyone is in the Duke's court trying to save Antonio from the bond Shylock has with him. In this speech Portia lectures Shylock on the powerer and greatness the quality of mercy is. Shylock then still refuses to give mercy, but Portia finds a loophole and turns the tables on Shylock.
The quality of mercy is not strain'd,
It droppeth as the gentle rain from heaven
Upon the place beneath: it is twice blest;
It blesseth him that gives and him that takes:
'Tis mightiest in the mightiest: it becomes
The throned monarch better than his crown;
His sceptre shows the force of temporal power,
The attribute to awe and majesty,
Wherein doth sit the dread and fear of kings;
But mercy is above this sceptred sway;
It is enthroned in the hearts of kings,
It is an attribute to God himself;
And earthly power doth then show likest God's
When mercy seasons justice. Therefore, Jew,
Though justice be thy plea, consider this,
That, in the course of justice, none of us
Should see salvation: we do pray for mercy;
And that same prayer doth teach us all to render
The deeds of mercy. I have spoke thus much
To mitigate the justice of thy plea;
Which if thou follow, this strict court of Venice
Must needs give sentence 'gainst the merchant
there.