Sonnet 154 presented in Sonnet 153. In the first quatrain, the man wishes that his beauty be passed onto his heir. The second quatrain asks the question of how beauty can be maintained through time and poetry. Finally, the third ends with the woeful realization that the preservation of happiness is problematic in and of itself. The rhyme scheme within Sonnet 153 and 154 is inconsistent in that the words do not necessarily follow the same sounds. Lines 10 and 12 end with the words "perpetual" and "thrall" and lines 13 and 14 end with "prove" and "love." Authors argue that this
Poetry calligraphy. These basic units of poetic form are often combined into larger structures, called "poetic forms" or poetic modes (see following section), as in the sonnet or haiku. Poetry is often separated into lines on a page. These lines may be based on the number of metrical feet, or may emphasize a rhyming pattern at the ends of lines. Lines may serve other functions, particularly where the poem is not written in a formal metrical pattern. Lines can separate, compare or contrast thoughts expressed in different units, or can highlight a change in tone. See the article on line breaks