Sonnet 21 is one of 154 sonnets written by the English playwright and poet William Shakespeare and is part of the "fair youth" sequence.
 Like Sonnet 130, it addresses the issue of truth in love, as the speaker asserts that his lines, while less extravagant than those of other poets, are more truthful.
 Contrary to most of Shakespeare's sonnets, Sonnet 21 is not addressed to any one person.
 There is no second person, no overt "you" or "thou" expressed in it.
The sexuality of English playwright William Shakespeare has been the subject of recurring debate.
 It is known from public records that he married Anne Hathaway and that they had three children; scholars have analysed their relationship through these documents, and particularly through the bequests to her in Shakespeare's will.
 Some have speculated Shakespeare had affairs with other women, based on contemporaries' written anecdotes of such affairs and sometimes on the "Dark Lady" figure in his sonnets.
 Some scholars have argued he was bisexual, based on analysis of the sonnets: many, including Sonnet 18 "Shall I compare thee to a summer's day", are love poems addressed to a man, the "Fair Youth", and contain puns relating to homosexuality.
Sonnet 11 is one of 154 sonnets written by the English playwright and poet William Shakespeare.
 It is a procreation sonnet within the 126 sonnets of the Fair Youth sequence, a grouping of Shakespeare's sonnets addressed to an unknown young man.
 While the order in which the sonnets were composed is undetermined (though it is mostly agreed that they were not written in the order in which modern readers know them), Sonnet 11 was first published in a collection, the Quarto, alongside Shakespeare's other sonnets in 1609.
Sonnet 144 (along with Sonnet 138) was published in the "Passionate Pilgrim" (1599).
 Shortly before this, Francis Meres referred to Shakespeare's Sonnets in his handbook of Elizabethan poetry, Palladis Tamia, or Wit's Treasurie, published in 1598, which was frequently talked about in the literary centers of London taverns.
 Shakespeare's sonnets are mostly addressed to a young man, but the chief subject of Sonnet 127 through Sonnet 152 is the "dark lady".
 Several sonnets portray a conflicted relationship between the speaker, the "dark lady" and the young man.
 Sonnet 144 is one of the most prominent sonnets to address this conflict.
Sonnet 20 is one of the best-known of 154 sonnets written by the English playwright and poet William Shakespeare.
 Part of the Fair Youth sequence (which comprises sonnets 1-126), the subject of the sonnet is widely interpreted as being male, thereby raising questions about the sexuality of its author.
 In this sonnet (as in, for example, Sonnet 53) the beloved's beauty is compared to both a man's and a woman's.
Sonnet 110 is one of 154 sonnets written by the English playwright and poet William Shakespeare.
 Sonnet 110 was published along with the other sonnets in the 1609 Quarto.
 The sonnet falls in place with the Fair Youth sequence of Shakespeare's sonnets, in which the poet expresses his love towards a young man.
 The mystery of the young man is still unknown today.
 However, there are many different theories by various scholars of who this young man may be.
 There has been much debate whether or not this sonnet was written about Shakespeare's disdain with the stage and actors.
 Whereas others have interpreted sonnet 110 as the poet confessing his love to a young man.
Sonnet 102 is one of the 154 sonnets written by English playwright and poet William Shakespeare.
 It is one of the Fair Youth sonnets, in which Shakespeare writes of an unnamed youth with whom the poet is enamored.
 Sonnet 102 is among a series of seemingly connected sonnets, from Sonnet 100 to Sonnet 103, in which the poet speaks of a silence between his Muse and himself.
 The exact date of writing is unknown, and there is contention among scholars about when they were written.
 Paul Hammond among other scholars believes that sonnets 61-103 were written primarily during the early 1590s, and then being edited or added to later, during the early 1600s (decade).
 Regardless of date of writing, it was published later along with the rest of the sonnets of the 1609 Quarto.
Shakespeare's Sonnet 53, presumably addressed to the same young man as the other sonnets in the first part of the sequence, raises some of the most common themes of the sonnet: the sublime beauty of the beloved, the weight of tradition, and the nature and extent of art's power.
 As in Sonnet 20, the beloved's beauty is compared to both a man's (Adonis) and a woman's (Helen).
Sonnet 151 is the 151st of 154 poems in sonnet form by William Shakespeare published in a 1609 collection titled "Shakespeare's sonnets".
 The sonnet belongs to the Dark Lady sequence (sonnets 127–152), which distinguishes itself from The Fair Youth sequence by being more overtly sexual in its passion.
 Sonnet 151 is characterized as "bawdy" and is used to illustrate the difference between the spiritual love for the "Fair Youth" and the sexual love for the "Dark Lady".
 The distinction is commonly made in the introduction to modern editions of the sonnets in order to avoid suggesting that Shakespeare was homosexual.
As the last in the famed collection of sonnets written by English poet and playwright William Shakespeare from 1592 to 1598, Sonnet 154 is most often thought of in a pair with the previous sonnet, number 153.
 As A. L. Rowse states in "Shakespeare's Sonnets: The Problems Solved", Sonnets 153 and 154 "are not unsuitably placed as a kind of coda to the Dark Lady Sonnets, to which they relate."
 Rowse calls attention to the fact that Sonnets 153 and 154 "serve quite well to round off the affair Shakespeare had with Emilia, the woman characterized as the Dark Lady, and the section of the Dark Lady sonnets".
 Shakespeare used Greek mythology to address love and despair in relationships.
 The material in Sonnets 153 and 154 has been shown to relate to the six-line epigram by the Byzantine poet known as Marianus Scholasticus, who published a collection of 3,500 poems called "The Greek Anthology".
 When translated, the epigram resembles Sonnets 153 and 154, addressing love and the story of Cupid, the torch, and the Nymph's attempt to extinguish the torch.

Question: Sonnet 20 is an example of the vague secuality of William Shakespeare because many of his sonnets are addressed to the beauty of what?
Answer: both a man's and a woman's