The given lines are from William Shakespeare's "Sonnet 116". The sonnet is a definition of what love is and what it is not. It presents the different qualities of love, and how it is not defined or confined by time.
Sonnets are primarily written in appreciation of love. And in the given lines which constitute the third quatrain of the sonnet, the poet talks of how <em>"love's not Time's fool [.....] alters not with his brief hours and weeks"</em>. Rather, it pours forth till <em>"the edge of doom",</em> without any limitations.
A quatrain is a poem where a stanza has four lines written in iambic pentameter. And Shakespeare's sonnets have four quatrains and a couplet, meaning there are three stanzas with four lines and a two-lined stanza in the end which is called the couplet. And the particular rhyme scheme in this sonnet is the couplet form.
