May shake the world, and when the surface rolls,
Hath power to walk the waters like our Lord.

`There likewise I beheld Excalibur
Before him at his crowning borne, the sword
That rose from out the bosom of the lake,
And Arthur rowed across and took it--rich
With jewels, elfin Urim, on the hilt,
Bewildering heart and eye--the blade so bright
That men are blinded by it--on one side,
Graven in the oldest tongue of all this world,
"Take me," but turn the blade and ye shall see,
And written in the speech ye speak yourself,
"Cast me away!" And sad was Arthur's face
Taking it, but old Merlin counselled him,
"Take thou and strike! the time to cast away
Is yet far-off." So this great brand the king
Took, and by this will beat his foemen down.'

Thereat Leodogran rejoiced, but thought
To sift his doubtings to the last, and asked,
Fixing full eyes of question on her face,
`The swallow and the swift are near akin,
But thou art closer to this noble prince,
Being his own dear sister;' and she said,
`Daughter of Gorlos and Ygerne am I;'
`And therefore Arthur's sister?' asked the King.
She answered, `These be secret things,' and signed
To those two sons to pass, and let them be.
And Gawain went, and breaking into song