When the lids of dusk are falling 
O'er the dreamy eyes of day, 
And the whippoorwills are calling, 
And the lesson laid away,-- 
May Mem'ry soft and tender 
As the prelude of the night, 
Bend over you and render 
As tranquil a delight.
James Whitcomb Riley
http://www.poemhunter.com/poem/to-annie/