What it is to breathe and live without life;  
How to be pale with anguish, red with fear;  
T'have peace abroad, and nought within but strife;  
Wish to be present, and yet shun t'appear;  
How to be bold far off, and bashful near;  
How to think much, and have no words to speak;  
To crave redress, yet hold affliction dear;  
To have affection strong, a body weak;  
Never to find, and evermore to seek;  
And seek that which I dare not hope to find;  
T'affect this life, and yet this life disleek;  
Grateful t'another, to myself unkind:  
This cruel knowledge of these contraries,  
Delia, my heart hath learn'd out of those eyes.
Samuel Daniel
http://www.poemhunter.com/poem/sonnet-xx-what-it-is-to-breathe/