For instance, the poem's Part IV contains a stunning inversion of Platonism and related theories about universals, such as the universal (property, feature) "beauty". Instead of saying that beauty is an abstract unchanging Platonic Form existing perfectly in a world separate from the five senses, or an abstract unchanging concept in the mind, the poem says that, paradoxically, "Beauty is momentary in the mind": only transient beauty in the flesh is immortal. Kessler notes that "Unlike Plato or Kant, Stevens strives to unite idea and image."