Thomas S. Jones Jr. - Sometimes

Across the fields of yesterday
   He sometimes comes to me,
A little lad just back from play --
   The lad I used to be.

And yet he smiles so wistfully
   Once he has crept within,
I wonder if he hopes to see
   The man I might have been.

Thomas S. Jones Jr.

http://www.poemhunter.com/poem/sometimes-49/