William Butler Yeats (1865-1939), "Pan," Under the Moon: The Unpublished Early Poetry.
Edited by George Bornstein (New York: Scribner, 1995), p. 74:
I sing of Pan and his piping sweet,
King of the shade and the sunlight
That dance amongst the flames of wheat,
I sing too of the dew bounding
From the impress of the steeds' feet.
I sing of solitude,
Temple decked to Pan by that race
Of mysterious priests
Who've seen the great god face to face,
Who of Pan their melodious king
Have heard hushed talk among the leaves,
Who have heard the brooks the story sing
How an angel race once lived on earth
With bountiful Pan as their King.
A new god rose who hated man;
They died, their shades possess the earth,
And to the woods fled the bountiful Pan.