Who said "How do you know you're dreaming?"?

This quote is attributed to Lucy Pevensie.

How do you know you're dreaming? - Lucy Pevensie

"How do you know you're dreaming?"

Lucy Pevensie

Character in The Chronicles of Narnia: The Lion, the Witch and the Wardrobe

"I have come home at last!"

"This is not at all like Narnia as it used to be."

"We must make haste."

"The Winter will not last forever."