Walking at twilight in autumn, watching dead leaves drift, or looking up into a mild spring sky—either way, the speaker notices a hollowed-out feeling. The present moment is missing something. That something, he realizes, is what has just passed: the crisp marvel of winter frost and snow, the summer’s drifting clouds. They are nowhere now. The lines don’t argue or explain; they simply voice a discovery that each season’s beauty vanishes into the next, leaving behind a faint, lingering sadness. The mood is wistful, almost a sigh, as if the speaker is gently stunned by time’s quiet disappearing act. It’s not despairing, but a reflective ache for how the world keeps turning, and how memory holds what the eye can no longer see.
Stanza — Summary
If I walk in Autumn's even While the dead leaves pass, If I look on Spring's soft heaven,-- Something is not there which was Winter's wondrous frost and snow, Summer's clouds, where are they now?