Diagonal paths quadrisect a square acre white as the page in February. From the soil of this basic geometry ash, elm, and maple flourish like understandings whose bare logics are visible, understandings the theorem has allowed. Between roam bodies of the sensible world: people, dogs, all those lovers of the material and immaterial illumined, as under working hypotheses, by sodium bulbs whose costly inefficiencies Los Angeles and Philadelphia have apparently moved on from.