The function of a book or a poem or a story is to delight, to enchant, to beguile.

Education and health were always matters of charity. You educated children and you helped the sick because they were good things to do, not because you were going to make money out of them. If you let the money-making principle, the profit-seeking motive, anywhere near education and health, things go bad.

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.

I told him I was going to betray you, and betray Lyra, and he believed me because I was corrupt and full of wickedness; he looked so deep I felt sure he'd see the truth. But I lied too well. I was lying with every nerve and fiber and everything I'd ever done...I wanted him to find no good in me, and he didn't. There is none.

Lyra learns to her great cost that fantasy isn’t enough. She has been lying all her life, telling stories to people, making up fantasies, and suddenly she comes to a point where that’s not enough. All she can do is tell the truth. She tells the truth about her childhood, about the experiences she had in Oxford, and that is what saves her. True experience, not fantasy - reality, not lies - is what saves us in the end.

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.