This essay challenges Paul de Man’s famous reading of figurality in Percy Shelley’s The Triumph of Life to show how the poem thinks love as a figural-material quantum entanglement between two people that models a new materialist politics. I argue that for Shelley the “shape all light” and its interaction with the rainbow evince one instance of this figural-material phenomenon. This interaction I read as a form of what Karen Barad calls “quantum entanglement,” when the subject and object—as in physics’ double-slit quantum light experiment—emerges as a new entity that brings a novel spacetime into being. As Shelley theorizes it in the poem, this merger of subject and object, or lover and lover, allows him to finally conceive a love that serves as a cornerstone for a radical politics. While we tend to see the poem as breaking off into irresolution, Shelley’s poem, on my reading, instead envisions how two-person spacetimes are a triumph of love over the nihilistic autocratic politics of anarchy that the poem depicts running wild in the pageantry of life.