Elizabeth Barrett Browning opens with a puzzle that anyone who has been in love will recognise. The person she adores smiled at her today, so why does his image swim through tears tonight? Sonnet 30, part of her sequence *Sonnets from the Portuguese*, never settles the puzzle. It turns it over and looks for the cause from every angle. Is it his fault or hers? Has he stopped loving her, or did she never see what she thought she saw? The central idea is that love felt at full strength can become frightening once the loved one is out of sight, and that the speaker's only trustworthy evidence is her own weeping.
The poem is built almost entirely from questions. The first, "How / Refer the cause?", is cut off by a line break, so the word "How" hangs at the end of the line like a shrug. Barrett Browning uses the Petrarchan sonnet form, with an octave rhyming *abba abba* and a sestet rhyming *cdcdcd*, all in iambic pentameter. The octave's tight rhymes (night, acolyte, rite, sight) press close together just as her thoughts circle without escaping. The syntax is deliberately unsteady. "Or I, who makes me sad?" breaks off mid-thought and bends the grammar, as if she cannot stay composed long enough to finish a tidy sentence.
At the centre of the octave is the image of the acolyte, a young assistant at a church service. He stands "amid the chanted joy and thankful rite", the moment when everyone should feel most secure, yet he collapses "with pale insensate brow, / On the altar-stair." The comparison is surprising. The speaker hears her lover's "voice and vow" the way the acolyte hears the choir's Amen, and the very moment of promise leaves her faint and "perplexed". Line 9 even has to borrow its verb from earlier in the sentence ("I hear… / As he [hears], in his swooning ears, the choir's Amen"). The grammar seems to swoon along with the acolyte, and the volta lands in the middle of that unfinished thought, so the blunt question "Beloved, dost thou love?" arrives with real force.
The sestet moves from religious imagery to imagery of light and sight. She wonders whether she "did see all / The glory as I dreamed", and the word "dreamed" admits that she may have been inventing him. Then comes the strangest phrase in the poem: "Too vehement light dilated my ideal, / For my soul's eyes." To dilate is what the pupil of an eye does, and the word suggests an ideal stretched wide open by too much brightness. The faint of the acolyte now has a second explanation. She may be overwhelmed by too much love, not too little. Her sadness could be a symptom of intensity, not loss, which makes this a more generous suspicion than the one about his heart.
The ending is carefully engineered. The final rhyme pair, "ideal" and "real", forces the poem's two opposing worlds into the same sound. Everything that belongs to the light ("image", "glory", "dreamed", "ideal") is uncertain and may not come back. The tears, in contrast, are "falling hot and real", physical and undeniable. The poem's last repeated word, "come", links the two: "Will that light come again, / As now these tears come". She cannot be sure of the light, but she can be sure of the tears.
What makes the sonnet significant is its honesty. Love poetry often performs certainty, and the best-known sonnet in this sequence, "How do I love thee?", counts the ways with confidence. Here, by contrast, Barrett Browning writes about the fear that comes with deep feeling, and she is willing to blame herself as readily as her beloved. She also borrows the language of worship for human love and then shows its danger, since the person kneeling at the altar is the one most likely to fall. Judging by the poem itself, she suggests that real love is not the absence of doubt but the willingness to feel it fully and write it down.