query: What was Shakespeare's most famous poem?
passage: Sonnet 18
Sonnet 18 is one of the best-known of the 154 sonnets written by the English playwright and poet William Shakespeare.
passage: Sonnet 138
Sonnet 138 is one of the most famous of William Shakespeare's sonnets. Making use of frequent puns ("lie" and "lie" being the most obvious), it shows an understanding of the nature of truth and flattery in romantic relationships. The poem has also been argued to be biographical: many scholars have suggested Shakespeare used the poem to discuss his frustrating relationship with the Dark Lady, a frequent subject of many of the sonnets. (To note, the Dark Lady was definitely not Shakespeare's wife, Anne Hathaway.) The poem emphasizes the effects of age and the associated deterioration of beauty, and its effect on a sexual or romantic relationship.