Order is ... the true key to rapidity of reaction.

Beauty lies in harmony, not in contrast; and harmony is refinement; therefore, there must be a fineness of the senses if we are to appreciate harmony.

The environment must be rich in motives which lend interest to activity and invite the child to conduct his own experiences.

When children come into contact with nature, they reveal their strength.

The greatest triumph of our educational method should always be this: to bring about the spontaneous progress of the child.

When mental development is under discussion, there are many who say, 'How does movement come into it? We are talking about the mind.' And when we think of intellectual activity, we always imagine people sitting still, motionless. But mental development must be connected with movement and be dependent on it. It is vital that educational theory and practice should be informed by that idea.

Discipline must come through liberty.