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.

The first aim of the prepared environment is, as far as it is possible, to render the growing child independent of the adult.

The observation of the way in which the children pass from the first disordered movements to those which are spontaneous and ordered -- this is the book of the teacher; this is the book which must inspire her actions . . .

The greatest source of discouragement is the conviction that one is unable to do something

The child should live in an environment of beauty.

The concept of an education centered upon the care of the living being alters all previous ideas. Resting no longer on a curriculum, or a timetable, education must conform to the facts of human life.

Education, as conceived today, is something separated both from biological and social life.