An author whome I sell, has written this:
Humanity reflected in the diversity of books Brian Doyle April 21, 2008
They have faces, of course — covers for what is inside. Often the cover belies the interior, just as the bright alluring faces of people often hide the seething and confusing stories beneath them.
And they have spines of various strengths and tensile pliability like we do. Spines that sag and crack and creak, spines that are wonderfully strong and flexible for a few decades and then invisibly deteriorate and lose their glue. They have arms too, so to speak — a book opened wide very like arms flung open. And their back covers, so dense with explanation and blurb, look very like the hirsute backs of heads;.
continues here