These passages appear on pages 126-127 of Traversal in the context of Mary Shelley’s life.

Where does love go when it goes?

It is a common question, contrived in its commonness yet savagely sincere, bellowing in the bosom of every brokenhearted lover, reverberating through the body of every civilization’s love songs and sonnets, radiating from cave drawings and dive bar graffiti. It is also a peculiar question, lexically and syntactically, for it presupposes two things about the life of the heart: a movement and a destination, as if love rose to its feet one day and headed for an elsewhere, left without a map, got lost, lost to seasons and cycles, lost like the mammoth and the human dorsal fin and the surnames of millennia of daughters. It feels like nothing less than a violation of the universe—how love alone can defy the first law of thermodynamics, how this most immense energy of being can simply dissipate into the oceanic austerity of time.

We build the sandcastles of our loves and fancy them fortresses of granite, then watch bewildered as the waves of our inconstancy lap them away, along with the footprints of the builder. Each love we love and unlove alters the way we walk through life, alters the trajectory of our traversal along the shoreline of the self. The only constant is that we go on walking, that we remain pilgrims of possibility. We would not walk if we had already arrived. We would not write if we had already arrived. Out of our incompleteness and our disorientation, out of our longing and our wanderlust, arises the motive force of every love and every revolution, of our science and our art, of our creation and our self-creation. Every creative act is an act of traversal.