Most English Renaissance sonnets are about love. This one, by Michael Drayton (1563-1631), starts like a lecture. A "learned Father" is introduced, and the poem never names him. The word "Father" and the stream of Latin terms suggest one of the early Christian teachers, but that is an inference. This teacher "so firmly proves / The Soul of man immortal and divine" and defines its "several offices." Offices are jobs, so the soul is imagined as one being holding many posts. Its name changes according to the work it is doing.
The structure follows that idea closely. The poem falls into three parts: three lines of introduction, nine lines of catalogue, and a closing couplet. The rhyme scheme (abba cddc effe gg) wraps each quatrain in an embrace: "proves" with "moves," "charity" with "Memory," "name" with "inflame." The Latin tags (Anima, Amor, Animus, Mens, Memoria, Ratio, Sensus, Conscientia, Spiritus) sit at the start of lines 4 to 12, one for each line. They read like marginal notes in a schoolbook, and they stand outside the verse itself, which is built on a loose five-beat line. Some lines look strained as Drayton packs definitions into them. "Sense" and "Conscience" make only an approximate rhyme, as though the list were being squeezed into the form.
Look at the verbs and the poem turns out to be less static than a list suggests. The soul "moves" the body, "embrac[es]" charity, is "Moving a Will," is "Retaining knowledge," is "judging," and reaches "in speedy apprehension." Each name is really an action. The soul is defined by what it does: moving, loving, remembering, weighing, grasping. One phrase, "they call her Conscience," admits that these names are human labels laid over a single thing. The list also has a direction. It begins with the soul moving "the Body" and ends with the "Spirit" that "to Godward doth inflame." That final word brings fire into a poem that has been mostly abstract. It quietly links naming to burning, since "inflame" rhymes with "name." The ladder runs from flesh to heaven.
Then the couplet changes the poem's manner. "These of the Soul the several functions be" is flat and summarising, the sentence a teacher uses to close a lesson. The poem has been waiting for this. The opening "learned Father" is a subject with no verb until the list is finished, so the grammar is suspended while the catalogue runs. The last line moves from the lesson to the speaker: "Which my Heart, lighten'd by thy love, doth see." The choice of "Heart" matters. The Father proves, but the speaker sees, and sees with the heart rather than the head. "Lighten'd" works two ways, to illuminate and to relieve of weight, so understanding arrives as both brightness and ease. The rhyme of "be" with "see" pairs what the soul is with what the heart perceives.
The poem does not say who "thy" is. The title, "To the Soul," and the soul's own name "Amor" (Love) might make it the soul's love, but it could also be a beloved person or God. Judging by the text alone, the ambiguity looks deliberate, because the poem's claim is that love, the second name on the list, is what makes the other eight names understandable.
What makes the poem interesting is this tension between an inherited system and a personal response. Drayton takes a piece of philosophical and religious taxonomy, which looks the least poetic material imaginable, and fits it into a sonnet. A sonnet is usually a love poem, so the form pulls against the content. The poem seems to know this. It gives the system faithfully, then suggests that a definition alone is not enough and that the soul is finally known through love. For a reader today, it shows a way of thinking about the self as a busy household of capacities that nonetheless stays one thing. It also makes a plain, persuasive point about learning: you can memorise every name and still need something to turn the light on.