“You may not see it now," said the Princess of Pure Reason, looking knowingly at Milo's puzzled face, "but whatever we learn has a purpose and whatever we do affects everything and everyone else, if even in the tiniest way. Why, when a housefly flaps his wings, a breeze goes round the world; when a speck of dust falls to the ground, the entire planet weighs a little more; and when you stamp your foot, the earth moves slightly off its course. Whenever you laugh, gladness spreads like the ripples in the pond; and whenever you're sad, no one anywhere can be really happy. And it's much the same thing with knowledge, for whenever you learn something new, the whole world becomes that much richer.”

“You may not see it now," said the Princess of Pure Reason, looking knowingly at Milo's puzzled face, "but whatever we learn has a purpose and whatever we do affects everything and everyone else, if even in the tiniest way.”

“But there's so much to learn," he said, with a thoughtful frown."Yes, that's true," admitted Rhyme; "but it's not just learning things that's important. It's learning what to do with what you learn and learning why you learn things at all that matters.""That's just what I mean," explained Milo as Tock and the exhausted bug drifted quietly off to sleep. "Many of the things I'm supposed to know seem so useless that I can't see the purpose in learning them at all.""You may not see it now," said the Princess of Pure Reason, looking knowingly at Milo's puzzled face, "but whatever we learn has a purpose and whatever we do affects everything and everyone else, if even in the tiniest way.”

“And it's much the same thing with knowledge, for whenever you learn something new, the whole world becomes that much richer.”

“But on your tiny planet, my little prince, all you need do is move your chair a few steps. You can see the day end and the twilight falling whenever you like..."One day," you said to me, "I saw the sunset forty-four times!" And a little later you added: "You know, one loves the sunset, when one is so sad..." "Were you so sad, then?" I asked, "on the day of the forty-four sunsets?" But the little prince made no reply.”

“It's like they say about soldiers coming back from war. People all around you are dying. Really dying, Eric. You go in for a week's chemotherapy and you're in a ward with people who are really, actually dying, there and then and doing their best to come to terms with it. When the week's up, you go home and you see your family and your friends and everything's normal and familiar. It's too much. You think - one world can't possibly hold both these lives and you feel like you're going to go crazy when you realise the world is that big and it can fill with the most terrible things whenever it wants to.”