Shakespeare's Sonnets: O how I faint when I of you do write

O how I faint when I of you do write,Knowing a better spirit doth use your name,And in the praise thereof spends all his mightTo make me tongue-tied speaking of your fame.But since your worth (wide as the ocean is)The humble as the proudest sail doth bear,My saucy bark (inferior far to his)On your broad main doth wilfully appear.Your shallow'st help will hold me up afloat,Whil'st he upon your soundless deep doth ride,Or (being wrack't) I am a worthless boat,He of tall building, and of goodly pride. Then if he thrive and I be cast away, The worst was this, my love was my decay.