Childhood is the world of miracle or of magic: it is as if creation rose luminously out of the night, all new and fresh and astonishing. Childhood is over the moment things are no longer astonishing. When the world gives you a feeling of "déjà vu," when you are used to existence, you become an adult.
Every kid starts out as a natural-born scientist, and then we beat it out of them. A few trickle through the system with their wonder and enthusiasm for science intact.