Louis Simpson’s lyric works by making its central comparison feel less like a figure of speech than like an act of seeing. The poem opens as an address — “Birch tree, you remind me” — and immediately the speaker translates the tree into an interior: “a room filled with breathing.” That phrase carries the poem’s intimate atmosphere. It is not a room full of objects but of breath, of life, and the next line adds “the sway and whisper of love,” words that could belong to leaves and branches as easily as to two people. From the first tercet, the outdoor and indoor worlds are already crossing.
The middle tercet turns from the tree to a woman. She is not introduced by any narrative bridge; she simply appears, because the memory has been triggered. The poem lingers on ordinary gestures: she “slips off her shoes; / Unzips her skirt; arms raised, / Unclasps an earring, and the other.” The semicolons give each motion its own slight pause, so the undressing becomes a sequence of small, deliberate events. The line ending “arms raised” holds the body suspended for a moment before the earrings come off. Nothing is described graphically; instead, the poem names the objects — shoes, skirt, earrings — and lets them imply the body. The phrase “and the other” is especially effective in its plainness: it suggests the second earring almost as an afterthought, yet its placement at the end makes the gesture complete.
Then “Just so” turns the poem back to the birch. The final tercet is visually exact: “the sallow trunk / Divides, and the branches / Are pale and smooth.” The word “sallow” is striking because it belongs as much to a complexion as to bark; in calling the trunk sallow, the poem half-sees it as a body. “Divides” describes how the single trunk splits upward into limbs, but after the image of the woman with raised arms, it also suggests the shape a body makes while undressing. The branches, “pale and smooth,” could describe arms or skin. By this point the simile has closed: the tree recalled the woman, and the woman now returns as a way of seeing the tree.
The poem’s construction is deliberately slight and quiet. There is no regular rhyme, and the three tercets feel almost like three breaths. The sound patterns matter more than any metrical pattern. Words such as “sway,” “whisper,” “slips,” “shoes,” “sallow,” and “smooth” share sibilants and soft consonants, so the language itself seems to exhale. The verbs in the middle stanza — “slips,” “unzips,” “unclasps” — carry the soft friction of cloth and metal. Even the word “love,” which might be vague, is anchored by the specific undressing that follows.
What makes the poem significant is its refusal to explain or moralise. It does not say that nature is like desire, or that memory lives in the world; it simply shows one perception becoming another. The birch triggers a private scene, and the scene then shapes the tree. In nine lines, Simpson moves from landscape to intimacy and back without losing the thread, leaving the reader with neither a pure nature poem nor a pure love poem but a fusion of the two. The central idea may be that intense memory can charge the external world, so that the birch is no longer only a tree but a loved body returned in another form. The speaker calls it “you” as if it were present and responsive, and the poem honors that moment of recognition. The result is an eroticism made of restraint: no bodies are described, only the body’s gestures and the tree’s pale divisions. That restraint is what gives the short lyric its lingering power.