Knowing reality means constructing systems of transformations that correspond, more or less adequately, to reality. They are more or less isomorphic … - Jean Piaget

Egocentrism in so far as it means confusion of the ego and the external world, and egocentrism in so far as it means lack of cooperation, constitute one and the same phenomenon. So long as the child does not dissociate his ego from the suggestions coming from the physical and from the social world, he cannot cooperate, for in order to cooperate one must be conscious of one's ego and situate it in relation to thought in general. And in order to become conscious of one's ego, it is necessary to liberate oneself from the thought and will of others. The coercion exercised by the adult or the older child is therefore inseparable from the unconscious egocentrism of the very young child.

Generally speaking, one can say that motor intelligence contains the germs of completed reason. But it gives promise of more than reason pure and simple. From the moral as from the intellectual point of view, the child is born neither good nor bad, but master of his destiny. Now, if there is intelligence in the schemas of motor adaptation, there is also the element of play. The intentionality peculiar to motor activity is not a search for truth but the pursuit of a result, whether objective or subjective; and to succeed is not to discover a truth.

There is little mysticism without an element of transcendence, and conversely, there is no transcendence without a certain degree of egocentrism. It may be that the genesis of these experiences is to be sought in the unique situation of the very young child in relation to adults. The theory of the filial origin of the religious sense seems to us singularly convincing in this connection.