The Phantom Tollbooth
How we cite our quotes:
"Don't be too sure," said the child patiently, "for one of the nicest things about mathematics, or anything else you might care to learn, is that many of the things which can never be, often are. You see," he went on, "it's very much like your trying to reach Infinity. You know that it's there, but you just don't know where – but just because you can never reach it doesn't mean that it's not worth looking for." (16.22)
It seems like everywhere Milo turns, he's getting advice about how great the whole process of learning is. Even the little boy who's only half there has an opinion about the learning process. And this awesome advice will pop up again later, when Azaz and Mathemagician tell Milo that finding Rhyme and Reason was impossible, but that because he didn't know that, it was possible. The takeaway point here seems to be, keep on dreaming, kiddo.