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.

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.

Grasping the structure of a subject is understanding it in a way that permits many other things to be related to it meaningfully. To learn structure in short, is to learn how things are related.

Knowledge is justified belief.

The fish will be the last to discover water.

Passion, like discriminating taste, grows on its use. You more likely act yourself into feeling than feel yourself into action.

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