YORK.
I took an oath that he should quietly reign.

EDWARD.
But for a kingdom any oath may be broken;
I would break a thousand oaths to reign one year.

RICHARD.
No; God forbid your grace should be forsworn.

YORK.
I shall be, if I claim by open war.

RICHARD.
I'll prove the contrary if you'll hear me speak.

YORK.
Thou canst not, son; it is impossible.

RICHARD.
An oath is of no moment, being not took
Before a true and lawful magistrate
That hath authority over him that swears.
Henry had none, but did usurp the place;
Then, seeing 't was he that made you to depose,
Your oath, my lord, is vain and frivolous.
Therefore, to arms! And, father, do but think
How sweet a thing it is to wear a crown,
Within whose circuit is Elysium
And all that poets feign of bliss and joy.