Of one long finger on my lip.

Oisin. We galloped over the glossy sea:
I know not if days passed or hours,
And Niamh sang continually
Danaan songs, and their dewy showers
Of pensive laughter, unhuman sound,
Lulled weariness, and softly round
My human sorrow her white arms wound.
We galloped; now a hornless deer
Passed by us, chased by a phantom hound
All pearly white, save one red ear;
And now a lady rode like the wind
With an apple of gold in her tossing hand;
And a beautiful young man followed behind
With quenchless gaze and fluttering hair.
'Were these two born in the Danaan land,
Or have they breathed the mortal air?'

'Vex them no longer,' Niamh said,
And sighing bowed her gentle head,
And sighing laid the pearly tip
Of one long finger on my lip.

William Butler Yeats