Sympathy Card Verses Quote For Sympathy/peace?

Quote for sympathy/peace? - sympathy card verses

I am looking for a verse from a sympathy card, which was very exciting, and now I can not remember what it was. It is of Thoreau or Emerson or Longfellow (Whitman? Frost?), Was on a walk with a friend, who then passed on or something. It was a beautiful poem, which reminds me of "The Road Not Taken ..."

If someone could run my memory, I would be very grateful!