The main characteristic of play - whether of child or adult - is not it content but its mode. Play is an approach to action, not a form of activity.

We need to conceive of ourselves as "agents" impelled by self-generated intentions.

"Thinking about thinking" has to be a principle ingredient of any empowering practice of education.

Understanding something in one way does not preclude understanding it in other ways.

The young child approaching a new subject or anew problem is like the scientist operating at the edge of his chosen field.

Telling others about oneself is...no simple matter. It depends on what we think they think we ought to be like

Learners are encouraged to discover facts and relationships for themselves.