Richard the Second (aka, Proof Positive that You Don't Read the Good Shakespearean Plays in High School English Class); specifically, any lines spoken by John of Gaunt, anything said by Richard after he learns of Bolingbroke's invasion (when you realize that his entire world has been overturned and he just. doesn't. know. what. to do. anymore.), and especially Mowbray's exile speech:
Mowbray: A heavy sentence, my most sovereign liege
And all unlooked for from your highness' mouth.
A dearer merit, not so deep a maim
As to be cast forth in the common air,
Have I deserv'd at your highness' hands.
The language I have learned these forty years,
My native English, now I must forgo;
And now my tongue's use is to me no more
Than an unstring'd viol or a harp,
Or like a cunning instrument cased up
Or, being open, put into his hands
That knows no touch to tune the harmony.
Within my mouth you have enjailed my tongue,
Doubly portcullised with my teeth and lips;
And dull, unfeeling, barren ignorance
Is made my jailer to attend on me.
I am too old to fawn upon a nurse,
Too far in years to be a pupil now.
What is thy sentence then but speechless death,
That robs my tongue from breathing native breath?