Some things in life are perfectly complementary. Peanut butter and jelly. Cookies and cream. Strawberries and chocolate. Yum! But being edible is not a prerequisite to complementarity. It turns out that the books you read, and the places you visit, can enhance one another just as well, perhaps even better, than a succulent piece of meat and a fine red wine (or a sumptuous salad and mango juice, for the discerning vegan).