In the first of his Meditations, Descartes sits by his fire and admits a troubling thought: he can find no sure sign that separates being awake from being asleep. Dave Bonta's four-line reply doesn't try to supply that sign. It gives two images instead, and the choice tells you what the poem thinks of the problem. Whatever the difference is, it isn't a matter of proof. It's a matter of what arrives at your door.
The poem is built like a piece of logic and then quietly betrays that form. It is a single sentence, with no capital letters and no punctuation, so it reads like a proposition: *the difference between waking and dreaming is the difference between…* The word "difference" appears twice, the second time reaching across a line break, as in an analogy where A is to B as C is to D. This is how a philosopher talks. But the second half of the equation is not a concept. It is a bird and a heavenly body, and the neat framework ends up holding something wild. The title adds to the effect. Without "Response to Descartes," the lines might pass for a riddle or a proverb, and with it they become a small, polite, slightly cheeky rebuttal.
The pairing of images does most of the work. The word order invites you to line them up: waking with the falcon, dreaming with the moon. A falcon is a real animal with weight, hunger and claws, and "having" one suggests falconry, a creature that has to be trained and carried on the glove. It stands for a world that is specific, graspable and a little dangerous. The moon is the opposite: remote, silver, impossibly large, and long associated with night and dreaming. To have it "at my door" breaks the rules of scale, which is exactly how dreams behave. Notice, too, the small asymmetry in the verbs. The falcon is simply *had*, owned, while the moon is only *at the door*, a visitor that arrives without being possessed. Waking, the poem hints, is where we hold things. Dreaming is where things come to us.
The sound of the poem supports this contrast. "Falcon" is quick and hard, with its crisp *f* and *k*, while "moon" is a single round vowel that lingers. The ending, "the moon at my door," slows down on its long vowels, so the last line seems to hang in the air like its subject. There is no rhyme, but there is a steady pull of repetition. "Waking," "dreaming" and "having" (twice) all end in *-ing*, which keeps the poem in the continuous present, as if both states were ongoing activities rather than fixed categories. The lines settle at around eight syllables each, give or take the stress on "difference," so the free verse still has the feel of a measured, deliberate statement.
The phrase "at my door" also matters. Descartes's thought experiment takes place inside one man's mind, in a warm private room. Bonta moves the question to the threshold, the place between inside and outside where the world, or the dream, comes knocking. It is a domestic, human detail, and it quietly changes the problem from "How can I be certain?" to "What visits me?"
Part of the poem's appeal is that it won't say which visitor is better. You could read it as a preference for the solid, living falcon, or as a longing for the impossible moon. Perhaps the point is that the two states differ less in truth than in kind of wonder: one is sharp, near and usable, and the other is vast, luminous and out of reach. A philosopher wants a test, and the poet offers a feeling, which may be closer to how we actually know whether we are awake.
That is what makes the poem worth reading. In twenty-odd words it shows that a poem can answer an argument by changing the terms of the question, and that an image can do some of what a syllogism can't.