Amahl and the Night Visitors

Amahl:
Are you a real king?

Balthazar:
Yes.

Amahl:
Have you regal blood?

Balthazar:
Yes.

Amahl:
Can I see it?

Balthazar:
It is just like yours.

Amahl:
What's the use of having it then?

Balthazar:
No use.

Amahl:
Amongst your magic stones, is there... is there one that could cure a crippled boy?

Kaspar:
Eh?

Amahl:
Never mind.