The Phases Of The Moon William Butler Yeats

An old man cocked his ear upon a bridge;
He and his friend, their faces to the South,
Had trod the uneven road. Their boots were soiled,
Their Connemara cloth worn out of shape;
They had kept a steady pace as though their beds,
Despite a dwindling and late risen moon,
Were distant. An old man cocked his ear.

AHERNE
What made that sound?

ROBARTES
A rat or water-hen
Splashed, or an otter slid into the stream.
We are on the bridge; that shadow is the tower,
And the light proves that he is reading still.
He has found, after the manner of his kind,
Mere images; chosen this place to live in
Because, it may be, of the candle light
From the far tower where Milton's platonist
Sat late, or Shelley's visionary prince:
The lonely light that Samuel Palmer engraved,
An image of mysterious wisdom won by toil;
And now he seeks in book or manuscript
What he shall never find.