James Sallis said this quote

I was coming up on a cross street when a man wearing a filthy suit stepped out from around the corner of the building ahead and directly into my path. Bent with age, he turned bleak red eyes to me and stared. Pressed with his chest to both hands he carried a paperback book as soiled and bereft as his suit. Are you one of the real ones or not? he demanded. And after a moment, when I failed to answer, he walked on, resuming his sotto voce conversation. A chill passed through me. Somehow, indefinably, I felt, felt with the kind of baffled, tacit understanding that we have in dreams , that I had just glimpsed one possible future self.