At least books belonged to me. Closed, a book is a rectangle, thin as a letter or thick and solid like a box or a brick. Open, it is two arcs of paper that, seen from the top or bottom when the book is wide open, look like the wide V of birds in flight. I think about that and then about women who turn into birds and then about Philomela, who in the Greek myth is turned into a nightingale after she is raped, as her brother-in-law pursues her to murder her.