PROSPERO.
Ariel, thy charge
Exactly is perform'd; but there's more work:
What is the time o' th' day?

ARIEL.
Past the mid season.

PROSPERO.
At least two glasses. The time 'twixt six and now
Must by us both be spent most preciously.

ARIEL.
Is there more toil? Since thou dost give me pains,
Let me remember thee what thou hast promis'd,
Which is not yet perform'd me.

PROSPERO.
How now! moody?
What is't thou canst demand?

ARIEL.
My liberty.

PROSPERO.
Before the time be out! No more!

ARIEL.
I prithee,