If you think of some dreadful thing, it's liable to happen, but if you don't think of it, and no one else thinks of it, it just can't happen. - L. Frank Baum

But you see, the Land of Oz has never been civilized, for we are cut off from the rest of the world. Therefore we still have witches and wizards amongst us.

Can’t you give me brains?” asked the Scarecrow. “You don’t need them. You are learning something every day. A baby has brains, but it doesn’t know much. Experience is the only thing that brings knowledge, and the longer you are on earth the more experience you are sure to get.

Yo prefiero el corazón -replicó el Leñador-, porque el cerebro no lo hace a uno feliz, y la felicidad es lo mejor que hay en el mundo.