A sonnet is a 14-line poem with a specifc rhyme scheme and meter (usually iambic pentameter). This poetry format–which forces the poet to wrap his thoughts in a small, neat package–originated in Sicily, Italy, in the 13th Century with the sonnetto (meaning little song), which could be read or sung to the accompaniment of a lute. When English poets began writing poems in imitation of these Italian poems, they called them sonnets, a term coined from sonnetto. Frequently, the theme of a sonnet was love, or a theme related to love. However, the theme also sometimes centered on religion, politics, or other topics. Poets often wrote their sonnets as part of a series, with each sonnet a sequel to the previous one. For example, William Shakespeare (1564-1616) wrote a series of 154 sonnets on the theme of love. 

Browning's Sonnet Series

Elizabeth Barrett Browning (1806-1861) wrote a series of 44 sonnets, in secret, about the intense love she felt for her husband-to-be, poet Robert Browning. She called this series Sonnets From the Portuguese, a title based on the pet name Robert gave her: "my little Portugee." "Sonnet 43" was the next-to-last sonnet in this series. In composing her sonnets, she had two types of sonnet formats from which to choose: the Italian model popularized by Petrarch (1304-1374) and the English model popularized by Shakespeare (1564-1616). She chose Petrarch's model. For an in-depth discussion and analysis of both sonnet models, click here.  

Rhyme Scheme and Divisions

The rhyme scheme of "Sonnet 43" is as follows: Lines 1 to 8–ABBA, ABBA; Lines 9 to 14–CD, CD, CD. Petrarch's sonnets also rhymed ABBA and ABBA in the first eight lines. But the remaining six lines had one of the following schemes: (1) CDE, CDE; (2) CDC, CDC; or (3) CDE, DCE. The first eight lines of a Petrarchan sonnet are called an octave; the remaining six lines are called a sestet. The octave presents the theme of the poem; the sestet offers a solution if there is a problem, provides an answer if there is a question, or simply presents further development of the theme. In Browning's "Sonnet 43," the octave draws analogies between the poet's love and religious and political ideals; the sestet draws analogies between the intensity of love she felt while writing the poem and the intensity of love she experienced earlier in her life. Then it says that she will love her husband-to-be even more after death, God permitting.    

Sonnet 43 Meter

"Sonnet 43" is in iambic pentameter (10 syllables, or five feet, per line with five pairs of unstressed and stressed syllables), as Lines 2 and 3 of the poem demonstrate. 

I LOVE..|..thee TO..|..the DEPTH..|..and BREADTH..|..and HEIGHT

My SOUL..|..can REACH,..|..when FEEL..|..ing OUT..|..of SIGHT

Theme: Intense Love

"Sonnet 43" expresses the poet’s intense love for her husband-to-be, Robert Browning. So intense is her love for him, she says, that it rises to the spiritual level (Lines 3 and 4). She loves him freely, without coercion; she loves him purely, without expectation of personal gain. She even loves him with an intensity of the suffering (passion: Line 9) resembling that of Christ on the cross, and she loves him in the way that she loved saints as a child. Moreover, she expects to continue to love him after death. 

Figures of Speech

The dominant figure of speech in the poem is anaphora–the use of I love thee in eight lines and I shall but love thee in the final line. This repetition builds rhythm while reinforcing the theme. Browning also uses alliteration, as follows:
thee, the (Lines 1, 2, 5, 9, 12).
thee,they (Line 8)
soul, sight (Line 3)
love, level (Line 5)
quiet, candle-light (Line 6) 
freely, strive, Right (Line 7)
purely, Praise (Line 8)
passion, put (Line 9)
griefs, faith (Line 10)
my, my (Line 10)
love, love (Line 11)
With, with (Line 12)
lost, love (Line 12)
lost, saints (Line 12)
Smiles, tears (Line 13) (z sound)
smiles, all, life (Line 13)
shall, love (Line 14)
but, better (Line 14)
but, better, after (Line 14)