Sonnet 3 form of a Shakespearean sonnet: fourteen decasyllabic, iambic pentameter lines, that form three quatrains and a concluding rhyming couplet. It follows the form's rhyme scheme: "abab cdcd efef gg". Each line of the first quatrain of Sonnet 3 exhibits a final extrametrical syllable or "feminine ending". The first line additionally exhibits an initial reversal: In this sonnet, the poet is urging the 'fair youth' to preserve something of himself and something of the image he sees in the mirror by fathering a child, "Now is the time that face should form another". The message is reiterated in the last lines
Sonnet 151 steer his actions. It uses the body as a metaphor for the penis, "rising" and "falling" with an erection when aroused, and so reduces the speaker to nothing more than his phallus; by giving in to his desires he enslaves himself to the "Dark Lady". Sonnet 151, with a "bawdy chronicle of erection and detumescence," contrasts with Sonnet 55's "grandiloquent expression," but their theme is the same: "what changes, what remains." Sonnet 55 "celebrates ... love and poetry that endure[s]" where Sonnet 151 "contemplates the inevitability of change..." Sonnet 151 has been compared to a verse by 17th-century author Joseph