William Blake - The Smile

There is a smile of love,
And ther is a smile of deciet,
And there is a smile of smiles
In which these two smiles meet.

And there is a frown of hate,
And there is a frown of disdain,
And there is a frown of frowns
Which you strive to forget in vain;

For it sticks in the heart's deep core,
And it sticks in the deep back bone.
And no smile that ever was smil'd
But only one smile alone,

That betwixt the cradle & grave
It only once smil'd can be;
But when it once is smil'd,
There's an end to all misery.

William Blake

http://www.poemhunter.com/poem/the-smile-10/