Jostein Gaarder said this quote

How terribly sad it was that people are made in such a way that they get used to something as extraordinary as living.

~ Jostein Gaarder

So now you must choose... Are you a child who has not yet become world-weary? Or are you a philosopher who will vow never to become so? To children, the world and everything in it is new, something that gives rise to astonishment. It is not like that for adults. Most adults accept the world as a matter of course. This is precisely where philosophers are a notable exception. A philosopher never gets quite used to the world. To him or her, the world continues to seem a bit unreasonable - bewildering, even enigmatic. Philosophers and small children thus have an important faculty in common. The only thing we require to be good philosophers is the faculty of wonder…

~ Jostein Gaarder

Imagine that one day you are out for a walk in the woods. Suddenly you see a small spaceship on the path in front of you. A tiny Martian climbs out the spaceship and stands on the ground looking up at you…What would you think? Never mind, it’s not important. But have you ever given any thought to the fact that you are a Martian yourself?It is obviously unlikely that you will ever stumble upon a creature from another planet. We do not even know that there is life on other planets. But you might stumble upon yourself one day. You might suddenly stop short and see yourself in a completely new light. On just such a walk in the woods. I am an extraordinary being, you think. I am a mysterious creature.You feel as if you are waking from an enchanted slumber. Who am I? you ask. You know that you are stumbling around on a planet in the universe. But what is the universe?If you discover yourself in this manner you will have discovered something as mysterious as the Martian we just mentioned. You will not only have seen a being from outer space. You will feel deep down that you are yourself an extraordinary being.

~ Jostein Gaarder

When you realize there is something you don't understand, then you're generally on the right path to understanding all kinds of things.

~ Jostein Gaarder