Sonnet 30 up of fourteen lines in three quatrains and a couplet, rhyming "abab cdcd efef gg". While using the rhyming and metrical structure of the 'English' or 'Surreyan' sonnet, Shakespeare often also reflected the rhetorical form of the Italian form also known as the Petrarchan sonnet. It divides the sonnet into two parts: the "octet" (the first eight lines) usually states and develops the subject, while the "sestet" (the last six lines) winds up to a climax. Thus a change in emphasis, known as the "volta", occurs between the end of the eighth and the beginning of the ninth lines —
Sonnet 57 type of poetic metre based on five pairs of metrically weak/strong syllabic positions. The sixth line exemplifies a regular iambic pentameter: The first line exemplifies an initial reversal and (optionally) a mid-line reversal: Rhian Williams asserts, "In literary value Shakespeare's sonnets are notably unequal. Many reach levels of lyric melody and meditative energy that are hardly to be matched elsewhere in poetry". His 57th sonnet is such a one and epitomises Shakespeare's signature sonnet structure as it conveys the influences of the 14th-century poet, Petrarch, and showcases again Shakespeare's talent. In fact, Danijela Kambasković-Sawers generalises, "The sonnet sequence genre constructs