We think we know the people close to us, but time brings with it more things that we don’t know than things we do, comparatively speaking we know less all the time, there’s always a greater area of shadow. Even if the illuminated area grows larger too, the shadows still win. I imagine you and Luisa have your secrets.” He remained silent for a few seconds and, seeing that I didn’t respond, added: “But, of course, you can only know about yours, because if you knew about hers they wouldn’t be secrets.”