The hoar-frost crumbles in the sun,   
 The crisping steam of a train   
Melts in the air, while two black birds   
 Sweep past the window again.   
  
Along the vacant road, a red 
 Bicycle approaches; I wait   
In a thaw of anxiety, for the boy   
 To leap down at our gate.   
  
He has passed us by; but is it   
 Relief that starts in my breast? 
Or a deeper bruise of knowing that still   
 She has no rest.
David Herbert Lawrence
http://www.poemhunter.com/poem/anxiety-2/