Five Children and It2004

Robert:
Sand Fairy, I need this wish.

Psammead:
If you wait, I can grant you a wish when dawn comes, but not before.

Robert:
But you'll do it?

Psammead:
Yes, but child, what then? The wish will fade at sunset, you know that.

Robert:
Maybe this wish won't fade.

Psammead:
You know it will.

Robert:
What's the point in wishes that don't last?

Psammead:
Magic. Faith. That is nature. I can show you the way, but in the end, it is up to you.