“There is an adult in every child and a child in every adult. The difference in nature reduces itself to this. There exist in the child certain attitudes and beliefs which intellectual development will more and more tend to eliminate: there are others which will acquire more and more importance. The latter are not simply derived from the former but are partly antagonistic to them. The two sets of phenomena are to be met both in the child and in the adult, but one set predominates in the one, the other in the other. It is, we may say, simply a question of the proportions in which they are mixed; so long as we remember that every difference of proportion is also a difference of general quality, for the spirit is one and undivided.” – Jean Piaget, The Moral Judgment of the Child (trans. Marjorie Gabain)