The couplet in this sonnet is found in the last two stanzas, i.e. For thy sweet love remembered such wealth brings; that then I scorn to change my state with kings. The purpose of said couplet is to add a turn (volta) to the sullen theme of the sonnet which talks about a state of self-deprecation and disgrace. The couplet is effective in communicating a sense of happy reminiscence of a love past or present. Through its description, the author defines it as the silver lining to the whole of his situation.