Family is the most important school.
What we see changes what we know. What we know changes what we see.
Play is the answer to how anything new comes about.Play is the work of childhood.
Every response, whether it be an act directed towards the outside world or an act internalized as thought, takes the form of an adaptation or, better, of a re-adaptation.
Intelligence, the most plastic and at the same time the most durable structural equilibrium of behaviour, is essentially a system of living and acting operations.