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.

Education must, be not only a transmission of culture but also a provider of alternative views of the world and a strengthener of the will to explore them.

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

Whoever reflects recognizes that there are empty and lonely spaces between one’s experiences.

I would urge that the yeast of education is the idea of excellence, and the idea of excellence comprises as many forms as there are individuals, each of whom develops his own image of excellence. The school must have as one of its principal functions the nurturing of images of excellence.

Learners are encouraged to discover facts and relationships for themselves.

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