Within the hollow crownThat rounds the mortal temples of a kingKeeps Death his court.

For in that sleep of death what dreams may come, When we have shuffled off this mortal coil, Must give us pause; there's the respect That makes calamity of so long life

HAMLET [...] we fat all creatures else to fat us, and we fat ourselves for maggots. Your fat king and your lean beggar is but variable service, two dishes, but to one table; that's the end.
CLAUDIUS Alas, alas.
HAMLET A man may fish with the worm that hath eat of a king, and eat of the fish that hath fed of that worm.
CLAUDIUS What dost thou mean by this?
HAMLET Nothing but to show you how a king may go a progress through the guts of a beggar.

ROSENCRANTZ My lord, you must tell us where the body is, and go with us to the king.
HAMLET The body is with the king, but the king is not with the body. The king is a thing -
GUILDENSTERN A thing my lord?
HAMLET Of nothing. Bring me to him. Hide fox, and all after!

And the king could find no sleep. Not then, not now, and still he waits to this day in a shell of spent flesh... but they say he no longer dreams.

Uneasy lies the head that wears a crown.