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.

This system in which a child is constantly moving objects with his hands and actively exercising his senses, also takes into account a child's special aptitude for mathematics. When they leave the material, the children very easily reach the point where they wish to write out the operation. They can thus carryout an abstract mental operation and acquire a kind of natural and spontaneous inclination for mental calculations.

Children are human beings to whom respect is due, superior to us by reason of their innocence and of the greater possibilities of their future.

Love and the hope of it are not things one can learn; they are a part of life's heritage.

A vital force is active in every individual and leads it towards its own evolution.

Free the child's potential, and you will transform him into the world.

The instructions of the teacher consist then merely in a hint, a touch-enough to give a start to the child. The rest develops of itself.