In the third quatrain, the speaker again describes what love is not: it is not susceptible to time. What alters are Time's brief hours and weeks…" and "Only the Day of Judgment invoked from the sacramental liturgy of marriage is the proper measure of love's time".
During the Reformation there was dispute about Catholic doctrines, "One of the points of disagreement was precisely that the Reformers rejected the existence of an ever-fixed, or in theological idiom, 'idelible' mark which three of the sacraments, according to Catholic teaching, imprint on the soul.
These differences are explained as, "The physical lovers are caught in a changing world of time, but they are stabilized by spiritual love, which exists in a constant world of eternal ideals.
But don't forget, in Shakespeare's time some of these words may have had the same pronunciation.
Onionspp. This sonnet is part of the Fair Youth sequence, a series of poems that are addressed to an unknown young man. Landry acknowledges the sonnet "has the grandeur of generality or a 'universal significance'," but cautions that "however timeless and universal its implications may be, we must never forget that Sonnet has a restricted or particular range of meaning simply because it does not stand alone.
Their descriptions of beauty were prefigurations of your beauty.
Essentially, this sonnet presents the extreme ideal of romantic love: it never changes, it never fades, it outlasts death and admits no flaw. Theme Organization in the Sonnets Sonnets in the Spotlight Sonnet is the poet's pragmatic tribute to his uncomely mistress, commonly referred to as the dark lady because of her dun complexion.
This fact is supported by Helen Vendler as she wrote, "The second refutational passage, in the third quatrain, proposes indirectly a valuable alternative law, one approved by the poet-speaker, which we may label "the law of inverse constancy": the more inconstant are time's alterations one an hour, one a weekthe more constant is love's endurance, even to the edge of doom".