The child has a mind able to absorb knowledge. He has the power to teach himself.

By the age of three, the child has already laid down the foundations of his personality as a human being, and only then does he need the help of special scholastic influences. So great are the conquests he has made that one may well say: the child who goes to school at three is already a little man.

The child's true constructive energy, a dynamic power, has remained unnoticed for thousands of years. Just as men have trodden the earth, and later tilled its surface, without thought for the immense wealth hidden in its depths, so the men of our day make progress after progress in civilized life, without noticing the treasures that lie hidden in the psychic world of infancy.

It is well to cultivate a friendly feeling towards error, to treat it as a companion inseparable from our lives, as something having a purpose, which it truly has.

How often is the soul of man - especially in childhood - deprived because he is not allowed to come in contact with nature.

Growth is not merely a harmonious increase in size, but a transformation.

The senses, being the explorers of the world, open the way to knowledge.