window moment

Many good poems have a kind of window-moment in them—they change their direction of gaze in a way that suddenly opens a broadened landscape of meaning and feeling. Encountering such a moment, the reader breathes in some new infusion, as steeply perceptible as any physical window's increase of light, scent, sound, or air. The gesture is one of lifting, unlatching, releasing; mind and attention swing open to new-peeled vistas.

—Jane Hirshfield, "Close Reading: Windows," Ten Windows: How Great Poems Transform the World (Alfred A. Knopf, 2015.)