Beside that milestone where the level sun,
Nigh unto setting, sheds his last, low rays
On word and work irrevocably done,
Life's blending threads of good and ill outspun,
I hear, O friends! your words of cheer and praise,
Half doubtful if myself or otherwise.
Like him who, in the old Arabian joke,
A beggar slept and crowned Caliph woke.
Thanks not the less. With not unglad surprise
I see my life-work through your partial eyes;
Assured, in giving to my home-taught songs
A higher value than of right belongs,
You do but read between the written lines
The finer grace of unfulfilled designs.

John Greenleaf Whittier

http://www.poemhunter.com/poem/response-7/