Transition from Sonnet 16 to Sonnet 20

Sonnet 16

But wherefore do not you a mightier way
Make war upon this bloody tyrant, Time?
And fortify yourself in your decay
With means more blessed than my barren rhyme?
Now stand you on the top of happy hours,
And many maiden gardens yet unset
With virtuous wish would bear your living flowers,
Much liker than your painted counterfeit:
So should the lines of life that life repair,
Which this, Time's pencil, or my pupil pen,
Neither in inward worth nor outward fair,
Can make you live yourself in eyes of men.
To give away yourself keeps yourself still,
And you must live, drawn by your own sweet skill.

Sonnet 17

Who will believe my verse in time to come,
If it were fill'd with your most high deserts?
Though yet heaven knows it is but as a tomb
Which hides your life, and shows not half your parts.
If I could write the beauty of your eyes,
And in fresh numbers number all your graces,
The age to come would say 'This poet lies;
Such heavenly touches ne'er touch'd earthly faces.'
So should my papers, yellow'd with their age,
Be scorn'd, like old men of less truth than tongue,
And your true rights be term'd a poet's rage
And stretched metre of an antique song;
But were some child of yours alive that time,
You should live twice, in it, and in my rhyme.

Sonnet 18
Shall I compare thee to a summer's day?
Thou art more lovely and more temperate:
Rough winds do shake the darling buds of May,
And summer's lease hath all too short a date;
Sometime too hot the eye of heaven shines,
And often is his gold complexion dimm'd;
And every fair from fair sometime declines,
By chance or nature's changing course untrimm'd;
But thy eternal summer shall not fade,
Nor lose possession of that fair thou ow'st;
Nor shall Death brag thou wander'st in his shade,
When in eternal lines to time thou grow'st
So long as men can breathe or eyes can see
So long lives this, and this gives life to thee.

Sonnet 19

Devouring Time, blunt thou the lion's paws,
And make the earth devour her own sweet brood;
Pluck the keen teeth from the fierce tiger's jaws,
And burn the long-liv'd phoenix, in her blood;
Make glad and sorry seasons as thou fleet'st,
And do whate'er thou wilt, swift-footed Time,
To the wide world and all her fading sweets;
But I forbid thee one most heinous crime:
O! carve not with thy hours my love's fair brow,
Nor draw no lines there with thine antique pen;
Him in thy course untainted do allow
For beauty's pattern to succeeding men.
Yet, do thy worst old Time: despite thy wrong,
My love shall in my verse ever live young.

Sonnet 20

A woman's face with nature's own hand painted,
Hast thou, the master mistress of my passion;
A woman's gentle heart, but not acquainted
With shifting change, as is false women's fashion:
An eye more bright than theirs, less false in rolling,
Gilding the object whereupon it gazeth;
A man in hue all hues in his controlling,
Which steals men's eyes and women's souls amazeth.
And for a woman wert thou first created;
Till Nature, as she wrought thee, fell a-doting,
And by addition me of thee defeated,
By adding one thing to my purpose nothing.
But since she prick'd thee out for women's pleasure,
Mine be thy love and thy love's use their treasure.

From this flow of sonnets that are connected to each other, we can see a gradual shift from talking about the desire to have a child (in Sonnet 16 and 17) so that one’s legacy can go on forever and his name will be carried downwards into the devotion of a loved one. As we reach Sonnet 18, the poet seems to describe more about being able to immortalize the beauty in poems (eternal lines) instead of wanting children. It could very well be argued that the eternal lines described in Sonnet 18 are, in fact, a metaphor for the lineage of children that will inherit Shakespeare’s name. The praises in Sonnet 18 about someone’s beauty were sung henceforth in Sonnet 19 thus the tone of the two sonnets are more or less alike.

Yet, a delicious controversy unfolds in Sonnet 20 where Shakespeare openly chose to speak about a man’s beauty which is similar as women (and for a woman wert thou first created) but Nature fell in love with her and changed her into a man. This man is sought after by both men and women. It gave a hint that Shakespeare might have cunningly been speaking about a man even from the earlier sonnets