Analysis of Sonnet 130: My mistress' eyes are nothing like the sun

My mistress' eyes are nothing like the sun;
Coral is far more red than her lips' red;
If snow be white, why then her breasts are dun;
If hairs be wires, black wires grow on her head.
I have seen roses damasked, red and white,
But no such roses see I in her cheeks,
And in some perfumes is there more delight
Than in the breath that from my mistress reeks.
I love to hear her speak, yet well I know,
That music hath a far more pleasing sound.
I grant I never saw a goddess go;
My mistress when she walks treads on the ground.
    And yet, by heaven, I think my love as rare
    As any she belied with false compare.