“But there is so much to learn,” Milo said, with a thoughtful frown.
“Yes, that’s true,” admitted Rhyme; “but it’s not just learning things that’s important. It’s learning why you learn things at all that matters…”
“… 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, … Whenever you laugh, gladness spreads like the ripples in a pond; and whenever you are sad, no one anywhere can be really happy. And it is much the same thing with knowledge, for whenever you learn something new, the whole world becomes that much richer.”
The Phantom Tollbooth -Norton Juster (p. 233-34)