From RSC (also great for Hamlet in general- context, genre ect)
If you're looking for an apt quotation for an essay or would simply like a thematic overview of the play, read on. Themes covered: Religion; Spying; Madness; Death; Love; Revenge; Corruption/Disease; Gardens. (All references are to the Penguin edition).
religion
HAMLET
[III.i.78-82]
But that the dread of something after death,
The undiscovered country, from whose bourn
No traveller returns, puzzles the will,
And makes us rather bear those ills we have
Than fly to others that we know not of?
KING
[III.iii.36-38]
O, my offence is rank. It smells to heaven.
It hath the primal eldest curse upon't,
A brother's murder. Pray can I not,
KING
[III.iii.98-99]
My words fly up, my thoughts remain below.
Words without thoughts never to heaven go.
HAMLET
[III.iv.150-151]
Confess yourself to heaven.
Repent what's past.
FIRST CLOWN
[V.i.1-2]
Is she to be buried in Christian burial
when she wilfully seeks her own salvation?
PRIEST
[V.i.232-234]
We sould profane the service of the dead
To sing a requiem and such rest to her
As to peace-parted souls.
Spying
POLONIUS
[II.i.63-68]
Your bait of falsehood takes this carp of truth,
And thus do we of wisdom and of reach,
With windlasses and with assays of bias,
By indirections find directions out.
So, by my former lecture and advice,
Shall you my son.
KING
[II.ii.14-18]
so by your companies
To draw him on to pleasures, and to gather
So much as from occasion you may glean,
Whether aught to us unknown afflicts him thus,
That, opened, lies within our remedy.
HAMLET
[II.ii.592-595]
I'll have these players
Play something like the murder of my father
Before mine uncle. I'll observe his looks.
I'll tent him to the quick. If 'a do blench,
I know my course.
POLONIUS
[III.i.179-181]
How now, Ophelia?
You need not tell us what Lord Hamlet said.
We heard it all.
HORATIO
[III.ii.98-99]
If 'a steal aught the whilst this play is playing,
And 'scape detecting, I will pay the theft.
POLONIUS
[III.iii.27-29]
My lord, he's going to his mother's closet.
Behind the arras I'll convey myself
To hear the process.
Madness
POLONIUS
[II.ii.146-150]
And he, repellèd, a short tale to make,
Fell into a sadness, then into a fast,
Thence to a watch, thence into a weakness,
Thence to a lightness, and, by this declension,
Into the madness wherein now he raves
HAMLET
[II.ii.377-378]
I am but mad north-north-west. When the wind
is southerly, I know a hawk from a handsaw.
OPHELIA
[III.i.151]
O, what a noble mind is here o'erthrown!
KING
[III.i.189]
Madness in great ones must not unwatched go.
KING
QUEEN
[IV.i.6-7]
What, Gertrude? How does Hamlet?
Mad as the sea and wind when both contend
Which is the mightier.
LAERTES
[IV.v.156-159]
O heat, dry up my brains! Tears seven times salt
Burn out the sense and virtue of mine eye!
By heaven, thy madness shall be paid with weight
Till our scale turn the beam.
Death
QUEEN
[I.ii.70-72]
Do not for ever with thy vailèd lids
Seek for thy noble father in the dust.
Thou knowest 'tis common. All that live must die,
HAMLET
[III.i.56]
To be, or not to be - that is the question;
HAMLET
POLONIUS
QUEEN
HAMLET
QUEEN
[III.iv.25-28]
How now? A rat? Dead for a ducat, dead!
O, I am slain!
O me, what hast thou done?
Nay, I know not. Is it the King?
O, what a rash and bloody deed is this!
QUEEN
[IV.vii.163-164]
One woe doth tread upon another's heel,
So fast they follow. Your sister's drowned, Laertes.
HAMLET
HORATIO
[V.ii.352-354]
the rest is silence.
Now cracks a noble heart. Good night, sweet Prince,
And flights of angels sing thee to thy rest!
[V.ii.352-354]
Love
OPHELIA
[I.iii.99-100]
He hath, my lord, of late made many tenders
Of his affection to me.
HAMLET
OPHELIA
[III.i.115-116]
I did love you once.
Indeed, my lord, you made me believe so.
KING
[III.i.163]
Love? His affections do not that way tend;
HAMLET
[V.i.265-267]
I loved Ophelia. Forty thousand brothers
Could not with all their quantity of love
Make up my sum. What wilt thou do for her?
R evenge
GHOST
HAMLET
GHOST
[I.v.23-25]
If thou didst ever thy dear father love-
O God!
Revenge his foul and most unnatural murder.
HAMLET
[III.iii.73-75]
Now might I do it pat, now 'a is a-praying.
And now I'll do't. And so 'a goes to heaven.
And so am I revenged.
HAMLET
[IV.iv.65-66]
O, from this time forth,
My thoughts be bloody, or be nothing worth!
LAERTES
[IV.v.137-138]
Let come what comes, only I'll be revenged
Most throughly for my father.
Corruption/disease
MARCELLUS
[I.iv.90]
Something is rotten in the state of Denmark.
HAMLET
ROSENCRANTZ
HAMLET
[III.ii.327-330]
Sir, I cannot.
What, my lord?
Make you a wholesome answer. My wit's diseased.
HAMLET
[III.iv.92-95]
Nay, but to live
In the rank sweat of an enseamèd bed,
Stewed in corruption, honeying and making love
Over the nasty sty -
FIRST CLOWN
[V.i.162-163]
'Faith, if 'a be not rotten before 'a die, as
we have many pocky corses nowadays that will scarce
hold the laying in, 'a will last you some eight year or
nine year.
Gardens
HAMLET
[I.ii.133-137]
How weary, stale, flat, and unprofitable
Seem to me all the uses of this world!
Fie on't, ah, fie, 'tis an unweeded garden
That grows to seed. Things rank and gross in nature
Possess it merely.
LAERTES
[V.i.234-236]
Lay her i'th'earth,
And from her fair and unpolluted flesh
May violets spring!