The child will reveal himself through work.

The teacher must derive not only the capacity, but the desire, to observe natural phenomena. The teacher must understand and feel her position of observer: the activity must lie in the phenomenon.

A great deal of time and intellectual force are lost in the world, because the false seems great and the truth so small and insignificant.

The unknown energy that can help humanity is that which lies hidden in the child.

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.

There should be music in the child's environment, just as there does exist in the child's environment spoken speech. In the social environment the child should be considered and music should be provided.

The hands are the instruments of man’s intelligence.