So by these signs he knew himself the thrall
Of that foul spirit unseen, and therewithal
Wholly unfellowed in captivity,
Bound round with fetters of the tyrannous sea. 
And sick for very loneliness, he passed
Downward through galleries and chambers vast
To one wide hall wherefrom a vestibule
Opened into a dim green space and cool,
Where great trees grew that various fruitage bore
The like whereof he had not seen before,
And hard by was a well of water sweet;
And being anhungered he did pluck and eat
The strange fair fruit, and being athirst did drink
The water, and lay down beside the brink;
Till sleep, as one that droppeth from the skies,
Dropt down, and made a mist about his eyes.

PART THE SEVENTH

But Sleep, who makes a mist about the sense,
Doth ope the eyelids of the soul, and thence
Lifteth a heavier cloud than that whereby
He veils the vision of the fleshly eye. 
And not alone by dreams doth Sleep make known
The sealed things and covert—­not alone
In visions of the night do mortals hear
The fatal feet and whispering wings draw near;
But dimly and in darkness doth the soul
Drink of the streams of slumber as they roll,
And win fine secrets from their waters deep: 
Yea, of a truth, the spirit doth grow in sleep.

Howbeit I know not whether as he slept
A voice from out the depth of dream upleapt
And whispered in his ear; or whether he
Grew to the knowledge blindly, as a tree
Waxes from bloom to fruitage, knowing not
The manner of its growth:  but this I wot,
That rising from that sleep beside the spring
The Prince had knowledge of a certain thing
Whereof he had not wist until that hour—­
To wit, that two contending spirits had power
Over his spirit, ruling him with sway
Altern; as ’twere dominion now of Day
And now of Dark; for one was of the light,
And one was of the blackness of the night.

Now there be certain evil spirits whom
The mother of the darkness in her womb
Conceived ere darkness’ self; and one of these
Did rule that island of the middle seas
Hemmed round with silence and enchantment dim. 
Nothing in all the world so pleasured him
As filling human hearts with dolorousness
And banning where another sprite did bless;
But chiefly did his malice take delight
In thwarting lovers’ hopes and breathing blight
Into the blossoms newly-opened
Of sweet desire, till all of sweet were fled: 
And (for he knew what secret hopes did fill
The minds of men) ’twas even now his will
To step between the Prince and his desire,
Nor suffer him to fare one furlong nigher
Unto that distant-shining golden goal
That beacon’d through the darkness to his soul.