Knowledge helps only when it descends into habits.

The foundations of any subject may be taught to anybody at any age in some form.

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

We begin with the hypothesis that any subject can be taught effectively in some intellectually honest form to any child at any stage of development.

There is, perhaps, one universal truth about all forms of human cognition: the ability to deal with knowledge is hugely exceeded by the potential knowledge contained in man's environment. To cope with this diversity, man's perception, his memory, and his thought processes early become governed by strategies for protecting his limited capacities from the confusion of overloading. We tend to perceive things schematically, for example, rather than in detail, or we represent a class of diverse things by some sort of averaged "typical instance.

In the perception of the incongruous stimuli, the recognition process is temporarily thwarted and exhibits characteristics which are generally not observable in the recognition of more conventional stimuli.

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