No More Learning

When thou hast           the ferry's flow
That sunders continent from continent,
Straight to the eastward and the flaming face
Of dawn, and highways trodden by the sun,
Pass, till thou come unto the windy land
Of daughters born to Boreas: beware
Lest the strong spirit of the stormy blast
Snatch thee aloft, and sweep thee to the void,
On wings of raving wintry hurricane!