"Everyone knows that at the age of 11-12, children have a marked impulse to form themselves into grou..." — Jean Piaget

All morality consists in a system of rules, and the essence of all morality is to be sought for in the respect which the individual acquires for these rules.

Before playing with his equals, the child is influenced by his parents. He is subjected from his cradle to a multiplicity of regulations, and even before language he becomes conscious of certain obligations.

The practice of narrative and argument does not lead to invention, but it compels a certain coherence of thought.

During the earliest stages the child perceives things like a solipsist who is unaware of himself as subject and is familiar only with his own actions.