[We] tend to select people like ourselves, a very monotonous diet. All hors d'oeuvres and no meat; or all sweets and no vegetables, depending on the kind of people we are. But . . . one thing is fairly certain: we usually select the known, seldom the strange. We tend not to choose the unknown which might be a shock or a disappointment or simply a little difficult to cope with. And yet it is the unknown with all its disappointments and surprises that is the most enriching.

Anne Morrow Lindbergh, The Holy Intimacy of Strangers by Sarah York