Play is the work of the child.

The secret of good teaching is to regard the child's intelligence as a fertile field in which seeds may be sown, to grow under the heat of flaming imagination.

A child starts from nothing and advances alone. It is the child's reason about which the sensitive periods revolve. The reason provides the initial force and energy, and a child absorbs his first images to assist the reason and act on it.

Discipline must come through liberty. . . . We do not consider an individual disciplined only when he has been rendered as artificially silent as a mute and as immovable as a paralytic. He is an individual annihilated, not disciplined.

Nothing is created or destroyed in nature.

Character formation cannot be taught. It comes from experience and not from explanation.

The objects in our system are instead a help to the child himself, he chooses what he wants for his own use, and works with it according to his own needs, tendencies and special interests. In this way, the objects become a means of growth.