Sleep! Cast thy canopy
Over this sleeper's brain,
Dim grow his memory,
When he wake again.

Love stays a summer night,
Till lights of morning come;
Then takes her winged flight
Back to her starry home.

Sleep! Yet thy days are mine;
Love's seal is over thee:
Far though my ways from thine,
Dim though thy memory.

Love stays a summer night,
Till lights of morning come;
Then takes her winged flight
Back to her starry home.

Ernest Christopher Dowson

http://www.poemhunter.com/poem/the-moon-maiden-s-song/