XI 
 
And therefore if to love can be desert, 
I am not all unworthy. Cheeks as pale 
As these you see, and trembling knees that fail 
To bear the burden of a heavy heart,— 
This weary minstrel-life that once was girt 
To climb Aornus, and can scarce avail 
To pipe now 'gainst the valley nightingale 
A melancholy music,—why advert 
To these things? O Beloved, it is plain 
I am not of thy worth nor for thy place! 
And yet, because I love thee, I obtain 
From that same love this vindicating grace, 
To live on still in love, and yet in vain,— 
To bless thee, yet renounce thee to thy face.
Elizabeth Barrett Browning
http://www.poemhunter.com/poem/sonnet-11-and-therefore-if-to-love-can-be-desert/