Analysis of Sonnet XX: What It Is to Breathe

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.