Shakespeare's Sonnets: Let me not to the marriage of true minds

Let me not to the marriage of true mindsAdmit impediments; love is not loveWhich alters when it alteration findsOr bends with the remover to remove.O no, it is an ever-fixèd markThat looks on tempests and is never shaken;It is the star to every wand'ring barkWhose worth's unknown, although his height be taken.Love's not time's fool, though rosy lips and cheeksWithin his bending sickle's compass come.Love alters not with his brief hours and weeksBut bears it out ev'n to the edge of doom: If this be error and upon me proved, I never writ, nor no man ever loved.