ONE that is ever kind said yesterday:
'Your well-beloved's hair has threads of grey,
And little shadows come about her eyes;
Time can but make it easier to be wise
Though now it seems impossible, and so
All that you need is patience.'
Heart cries, 'No,
I have not a crumb of comfort, not a grain.
Time can but make her beauty over again:
Because of that great nobleness of hers
The fire that stirs about her, when she stirs,
Burns but more clearly. O she had not these ways
When all the wild Summer was in her gaze.'
Heart! O heart! if she'd but turn her head,
You'd know the folly of being comforted.

William Butler Yeats

http://www.poemhunter.com/poem/the-folly-of-being-comforted/