Jean Piaget

"Every observer has noted that the younger the child, the less sense he has of his own ego. From the intellectual point of view, he does not distinguish between external and internal, subjective and ob…"

"There are in existence two distinct ideas of justice. We say that an award is unjust when it penalizes the innocent, rewards the guilty, or when, in general, it fails to be meted out in exact proporti…"

"I am convinced that there is no sort of boundary between the living and the mental or between the biological and the psychological. From the moment an organism takes account of a previous experience a…"

"Mixture of assimilation to earlier schemas and adaptation to the actual conditions of the situation is what defines motor intelligence. But — and this is where rules come into existence — as soon as a…"

"Genetic Epistemology First lecture"

"Knowing reality means constructing systems of transformations that correspond, more or less adequately, to reality. They are more or less isomorphic to transformations of reality. The transformational…"

"As you know, Bergson pointed out that there is no such thing as disorder but rather two sorts of order, geometric and living. Mine is clearly living. The folders I need are within reach, in the order …"

"Before games are played in common, no rules in the proper sense can come into existence. Regularities and ritualized schemas are already there, but these rites, being the work of the individual, canno…"