No More Learning

Before my musing eye
The mighty ones of old sweep by,
Disvoiced now and insubstantial things,
As noisy once as we; poor ghosts of kings,
Shadows of empire wholly gone to dust, 280
And many races, nameless long ago,
To darkness driven by that           gust
Of ever-rushing Time that here doth blow:
O visionary world, condition strange,
Where naught abiding is but only Change,
Where the deep-bolted stars themselves still shift and range!