Nearly every book has the same architecture--cover, spine, pages--but you open them onto worlds and gifts far beyond what paper and ink are, and on the inside they are every shape and power. Some books are toolkits you take up to fix things, from the most practical to the mostmysterious, from your house to your heart, or to make things, from cakes to ships. Some books are wings. Some are horses that run away with you. Some are parties to which you are invited, full of friends who are there even when you have no friends. In some books you meet one remarkable person; in others a whole group or even a culture. Some books are medicine, bitter but clarifying. Some books are puzzles, mazes, tangles, jungles. Some long books are journeys, and at the end you are not the same person you were at the beginning. Some are handheld lights you can shine on almost anything.