Let the children be free; encourage them; let them run outside when it is raining; let them remove their shoes when they find a puddle of water; and when the grass of the meadows is wet with dew, let them run on it and trample it with their bare feet; let them rest peacefully when a tree invites them to sleep beneath its shade; let them shout and laugh when the sun wakes them in the morning.

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

There must be provision for the child to have contact with nature; to understand and appreciate the order, the harmony and the beauty in nature.

Bring the child to the consciousness of his own dignity and he will feel free.

Within the child lies the fate of the future.

When a child is given a little leeway, he will at once shout, "I want to do it!" But in our schools, which have an environment adapted to children's needs, they say, "Help me to do it alone." And these words reveal their inner needs.

He who experiments must, while doing so, divest himself of every preconception. It is clear then that if we wish to make use of a method of experimental psychology, the first thing necessary is to renounce all former creeds and to proceed by means of the method in the search for truth.