Waking up one morning, Davy asks Anne:

“Anne,” said Davy, sitting up in bed and propping his chin on his hands, “Anne, where is sleep? People go to sleep every night, and of course I know it’s the place where I do the things I dream, but I want to know where it is and how I get there and back without knowing anything about it. . .and in my nighty too. Where is it?”

Anne was kneeling at the west gable window watching the sunset sky that was like a great flower with petals of crocus and a heart of fiery yellow. She turned her head at Davy’s question and answered dreamily,

“`Over the mountains of the moon,

Down the valley of the shadow.’”

Paul Irving would have known the meaning of this, or made a meaning out of it for himself, if he didn’t; but practical Davy, who, as Anne often despairingly remarked, hadn’t a particle of imagination, was only puzzled and disgusted.

“Anne, I believe you’re just talking nonsense.”‘

-Anne of Avonlea ch.18

This quotation is also used in the opening scenes of Anne of Avonlea/ Anne of Green Gables: The Sequel.

El Dorado
Edgar Allan Poe

Gaily bedight,
A gallant knight,
In sunshine and in shadow,
Had journey long,
Singing a song,
In search of Eldorado.

But he grew old,
This knight so bold,
And o’er his heart a shadow
Fell as he found
No spot of ground
That looked like Eldorado.

And, as his strength
Failed him at length,
He met a pilgrim shadow;
“Shadow, ” said he,
“Where can it be,
This land of Eldorado?”

”’”Over the Mountains
Of the Moon
Down the Valley of the Shadow,”’
Ride, boldly ride,”
The shade replied,

“If you seek for Eldorado!”