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- Sophie’s World.