Pierre Bayard said this quote

The books we love offer a sketch of a whole universe that we secretly inhabit, and in which we desire the other person to assume a role.One of the conditions of happy romantic compatibility is, if not to have read the same books, to have read at least some books in common with the other person—which means, moreover, to have non-read the same books. From the beginning of the relationship, then, it is crucial to show that we can match the expectations of our beloved by making him or her sense the proximity of our inner libraries.

~ Pierre Bayard

The title of the work, its place in the collective library, the nature of the person who tells us about it, the atmosphere established in the written or spoken exhange, among many other instances, offer alternatives to the book itself that allow us to talk about ourselves without dwelling upon the work too closely.

~ Pierre Bayard

Fictional characters exert a great deal of influence over our choices in love by representing inaccessible ideals to which we try to make others conform, usually without success. But more subtly, too, the books we love offer a sketch of a whole universe that we secretly inhabit, and in which we desire the other person to assume a role.

~ Pierre Bayard

Our relation to books is a shadowy space haunted by the ghosts of memory, and the real value of books lies in their ability to conjure these specters.

~ Pierre Bayard