Hamlet's "to be, or not to be" is primarily about this theme
Life and death
Hamlet is able to return from his exile thanks to this group of criminals
Pirates
To be, or not to be. That is the question.
Hamlet to himself
One woe doth tread upon another’s heel,
So fast they follow. Your sister’s drowned
Queen Gertrude to Laertes
Hamlet kills Polonius for these reasons
Polonius is hiding behind a curtain and cries out when the Queen shouts for help
Ophelia sadly drowns, but this aspect of her death is still unclear
Whether or not she allowed herself to drown or if she was incapable of understanding
Get thee to a nunnery, farewell. Or if thou wilt needs marry, marry a fool, for wise men know well enough what monsters you make of them.
Hamlet to Ophelia
How came he dead? I’ll not be juggled with.
To hell, allegiance! Vows, to the blackest devil!
Conscience and grace, to the profoundest pit!
Laertes to Claudius
Polonius is at supper. Not where he eats, but where he is eaten.
Hamlet to King Claudius
This character is the only person that Hamlet trusts with the truth about Claudius and Hamlet's plan to catch him.
Horatio
Claudius and Laertes are planning these venomous acts to kill Hamlet
Poison the tip of a sharpened sword
Poison Hamlet's drink
Nay, but to live
In the rank sweat of an enseamèd bed,
Stewed in corruption, honeying and making love
Over the nasty sty!
Hamlet to Queen Gertrude
I hope all will be well. We must be patient,
but I cannot choose but weep to think they would lay him in the cold ground.
Ophelia to the King/Queen
King Claudius is planning to send Hamlet away to this European country.
England
When Hamlet encounters Fortinbras, he and his army are currently on their way to fight this European country.
Poland
Thou wretched, rash, intruding fool. Farewell.
Hamlet to Polonius
Finding ourselves too slow of sail, we put on
a compelled valor, and in the grapple I boarded them.
On the instant they got clear of our ship, I alone
became their prisoner.
Hamlet to Horatio
Hamlet asks Rosencrantz and Guildenstern to try and play this type of instrument - after all, they seem to think that they can play him just as easily.
A recorder/flute/pipe
Hamlet actually hid Polonius' body here.
The lobby
There is a play tonight before the King.
One scene of it comes near the circumstance
Which I have told thee of my father’s death.
Hamlet to Horatio
Where the dead body is bestowed, my lord,
We cannot get from him.
Rosencrantz to the King