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.
Theme: Immortal Beauty
Comparable to The Picture of Dorian Gray
Lines 10-12 say that he won't lose his beauty and he'll never die because he will live on in this sonnet. Similar to how Dorian Gray lived on through the painting.
Summer is a metaphor for life, and the way that summer is caprice and eventually fades is symbolic for how people change and grow old
Shift in line 9 from describing how people change and grow old to describing how the friend of the speaker will never wither