The study of love and its utilization will lead us to the source from which it springs, 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.

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

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.

Independence is not a static condition; it is a continuous conquest, and in order to reach not only freedom, but also strength, and the perfecting on one's powers, it is necessary to follow this path of unremitting toil.

No adult can bear a child’s burden or grow up in his stead.