Imagination is a form of seeing

...when all the openings were closed, then the worlds would all be restored to their proper relations with one another, Lyra’s Oxford and Will’s would lie over each other again, like transparent images on two sheets of film being moved closer and closer until they merged–although they would never truly touch.

If a coin comes down heads, that means that the possibility of its coming down tails has collapsed. Until that moment the two possibilities were equal. But on another world, it does come down tails. And when that happens, the two worlds split apart.

To get the best out of life here ...Good grief. There's plenty of it about, so indulge. Give yourself some thing to remember. Fall in love. Fall out of love. Gamble. Get drunk. See how long you can stay awake. Go for long walks at night. Discover what you're afraid of doing, and then do it.

Lee saw the fireball and head through the roar in his ears Hester saying, "That's the last of 'em Lee." He said, or thought, "Those poor men didn't have to come to this, nor did we." She said, "We held 'em off. We held out. We're a-helping Lyra." Then she was pressing her little proud broken self against his face, as close as she could get, and then they died.

Teachers often make the mistake of thinking they're the boss of the class; they're not. The boss of the class is sitting down there somewhere.

The best way to get kids to read a book is to say: 'This book is not appropriate for your age, and it has all sorts of horrible things in it like sex and death and some really big and complicated ideas, and you're better off not touching it until you're all grown up. I'm going to put it on this shelf and leave the room for a while. Don't open it.