Critical Commentaries
Sonnet 18
One of the best known of Shakespeare’s sonnets, Sonnet 18 is memorable for the skillful and varied presentation of subject matter, in which the poet’s feelings reach a level of rapture unseen in the previous sonnets. The poet here abandons his quest for the youth to have a child, and instead glories in the youth’s beauty.
Initially, the poet poses a question—”Shall I compare thee to a summer’s day?”—and then reflects on it, remarking that the youth’s beauty far surpasses summer’s delights. The imagery is the very essence of simplicity: “wind” and “buds.” In the fourth line, legal terminology—”summer’s lease”—is introduced in contrast to the commonplace images in the first three lines. Note also the poet’s use of extremes in the phrases “more lovely,” “all too short,” and “too hot”; these phrases emphasize the young man’s beauty.
Although lines 9 through 12 are marked by a more expansive tone and deeper feeling, the poet returns to the simplicity of the opening images. As one expects in Shakespeare’s sonnets, the proposition that the poet sets up in the first eight lines—that all nature is subject to imperfection—is now contrasted in these next four lines beginning with “But.” Although beauty naturally declines at some point—”And every fair from fair sometime declines”—the youth’s beauty will not; his unchanging appearance is atypical of nature’s steady progression. Even death is impotent against the youth’s beauty. Note the ambiguity in the phrase “eternal lines”: Are these “lines” the poet’s verses or the youth’s hoped-for children? Or are they simply wrinkles meant to represent the process of aging? Whatever the answer, the poet is jubilant in this sonnet because nothing threatens the young man’s beautiful appearance.
Then follows the concluding couplet: “So long as men can breathe, or eyes can see, / So long lives this, and this gives life to thee.” The poet is describing not what the youth is but what he will be ages hence, as captured in the poet’s eternal verse—or again, in a hoped-for child. Whatever one may feel about the sentiment expressed in the sonnet and especially in these last two lines, one cannot help but notice an abrupt change in the poet’s own estimate of his poetic writing. Following the poet’s disparaging reference to his “pupil pen” and “barren rhyme” in Sonnet 16, it comes as a surprise in Sonnet 18 to find him boasting that his poetry will be eternal.
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2.Sonnet 18
Summary
The speaker opens the poem with a question addressed to the beloved: "Shall I compare thee to a summer's day?" The next eleven lines are devoted to such a comparison. In line 2, the speaker stipulates what mainly differentiates the young man from the summer's day: he is "more lovely and more temperate." Summer's days tend toward extremes: they are shaken by "rough winds"; in them, the sun ("the eye of heaven") often shines "too hot," or too dim. And summer is fleeting: its date is too short, and it leads to the withering of autumn, as "every fair from fair sometime declines." The final quatrain of the sonnet tells how the beloved differs from the summer in that respect: his beauty will last forever ("Thy eternal summer shall not fade...") and never die. In the couplet, the speaker explains how the beloved's beauty will accomplish this feat, and not perish because it is preserved in the poem, which will last forever; it will live "as long as men can breathe or eyes can see."
Commentary
This sonnet is certainly the most famous in the sequence of Shakespeare's sonnets; it may be the most famous lyric poem in English. Among Shakespeare's works, only lines such as "To be or not to be" and "Romeo, Romeo, wherefore art thou Romeo?" are better-known. This is not to say that it is at all the best or most interesting or most beautiful of the sonnets; but the simplicity and loveliness of its praise of the beloved has guaranteed its place.
On the surface, the poem is simply a statement of praise about the beauty of the beloved; summer tends to unpleasant extremes of windiness and heat, but the beloved is always mild and temperate. Summer is incidentally personified as the "eye of heaven" with its "gold complexion"; the imagery throughout is simple and unaffected, with the "darling buds of May" giving way to the "eternal summer", which the speaker promises the beloved. The language, too, is comparatively unadorned for the sonnets; it is not heavy with alliteration or assonance, and nearly every line is its own self-contained clause--almost every line ends with some punctuation, which effects a pause.
Sonnet 18 is the first poem in the sonnets not to explicitly encourage the young man to have children. The "procreation" sequence of the first 17 sonnets ended with the speaker's realization that the young man might not need children to preserve his beauty; he could also live, the speaker writes at the end of Sonnet 17, "in my rhyme." Sonnet 18, then, is the first "rhyme"--the speaker's first attempt to preserve the young man's beauty for all time. An important theme of the sonnet (as it is an important theme throughout much of the sequence) is the power of the speaker's poem to defy time and last forever, carrying the beauty of the beloved down to future generations. The beloved's "eternal summer" shall not fade precisely because it is embodied in the sonnet: "So long as men can breathe or eyes can see," the speaker writes in the couplet, "So long lives this, and this gives life to thee."