The principle goal of education in the schools should be creating men and women who are capable of doing new things, not simply repeating what other generations have done.

I have always detested any departure from reality, an attitude which I relate to my mother's poor mental health.

Teaching means creating situations where structures can be discovered.

The more we try to improve our schools, the heavier the teaching task becomes; and the better our teaching methods the more difficult they are to apply.

The more the schemata are differentiated, the smaller the gap between the new and the familiar becomes, so that novelty, instead of constituting an annoyance avoided by the subject, becomes a problem and invites searching.

Equilibrium is the profoundest tendency of all human activity.

The current state of knowledge is a moment in history, changing just as rapidly as the state of knowledge in the past has ever changed and, in many instances, more rapidly.