What is a scientist?... We give the name scientist to the type of man who has felt experiment to be a means guiding him to search out the deep truth of life, to lift a veil from its fascinating secrets, and who, in this pursuit, has felt arising within him a love for the mysteries of nature, so passionate as to annihilate the thought of himself.

Childhood constitutes the most important element in an adult's life, for it is in his early years that a man is made.

The child's conquests of independence are the basic steps in what is called his 'natural development'.

To assist a child we must provide him with an environment which will enable him to develop freely.

in nature everything is transformed but nothing destroyed.

A humankind abandoned in its earlier formative stage becomes its own greatest threat to survival.

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