Polonius is talking to his son Laertes who is leaving for France giving him advice. (1.3.84): "This above all: to thine own self be true, And it must follow, as the night the day, Thou canst not then be false to any man
Hamlet's description of the unnatural relationship between himself and Claudius (1.2.67): "A little more than kin and less than kind."
Ophelia is speaking to her brother Laertes who is giving her advice on her relationship with Hamlet (1.3.51): "Do not, as some ungracious pastors do, Show me the steep and thorny way to heaven, Whiles, like a puffed and reckless libertine, Himself the primrose path of dalliance treads And recks not his own rede."
The ghost is telling Hamlet, describing the actual cause of his death (1.5.33): "Murder most foul, as in the best it is, But this most foul, strange, and unnatural."
Hamlet to himself (3.1.64): "To be or not to be-that is the question: Whether 'tis nobler in the mind to suffer The slings and arrows of outrageous fortune, Or to take arms against a sea of troubles And, by opposing, end them."
The Player King performing the words Hamlet has written for him (3.2.234): "Our wills and fates do so contrary run That our devices still are overthrown; Our thoughts are ours, their ends none of our own."
Hamlet to Rosencrantz and Guildenstern on his madness (2.2.402): "I am but mad north-north-west. When the wind is southerly, I know a hawk from a handsaw."
Marcellus to Horatio after Hamlet follows the ghost (1.4.100): "Something is rotten in the state of Denmark."
Hamlet to Laertes prior to their duel (5.2.252): "Hamlet is of the faction that is wronged; His madness is poor Hamlet's enemy."
Hamlet is upset at the fact that kind Claudius is his stepfather as well as uncle with more than kin."A little more than kin, and less than kind." (1.2.65)
Hamlet plays off the double meaning of sun and son. "Not so, my lord; I am too much i' the sun."(1.2.67)
Polonius is telling Ophelia that many people are guilty of using religon to cover up their sinning."'Tis too much proved--that with devotion's visage And pious action, we do sugar o'er The devil himself. (3.1.47)"
Hamlet is saying that he will not be getting married to Ophelia."I say, we will have no more marriages.3.1.151)"
Hamlet has seen perfomances by famous actors who resembled wonders created by god instead of humans in costumes."I have thought some of Nature’s journeymen had made men and not made them well, they imitated humanity so abominably. (3.2.34) "
Someone who experiences everything but is harmed by nothing."A man that fortune’s buffets and rewards Hast ta’en with equal thanks. (3.2.69"
When your enemies come, they come out from everywhere."When sorrows come, they come not single spies, But in battalions. (4.5.78) "