Where is the sound?" someone hastily scribbled on the blackboard, and they all waited anxiously for the reply. Milo caught his breath, picked up the chalk, and explained simply, "It's on the tip of my tongue.

The way you see things depends a great deal on where you look at them from.

You can swim all day in the Sea of Knowledge and not get wet.

They walked for a while, all silent in their thoughts, until they reached the car and Alec drew a fine telescope from his shirt and handed it to Milo. "Carry this with you on your journey," he said softly, "for there is much worth noticing that often escapes the eye. Through it you can see everything from the tender moss in a sidewalk crack to the glow of the farthest star — and, most important of all, you can see things as they really are, not just as they seem to be. It's my gift to you.

What you can do is often simply a matter of what you will do.

I received a grant from The Ford Foundation to write a book for kids about urban perception, or how people experience cities, but I kept putting off writing it. Instead I started to write what became The Phantom Tollbooth

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.