The child’s parents are not his makers but his guardians.

A child's character develops in accordance with the obstacles he has encountered... or the freedom favoring his development that he has enjoyed.

Great tact and delicacy is necessary for the care of the mind of a child from three to six years, and an adult can have very little of it.

The child has a mind able to absorb knowledge. He has the power to teach himself.

The child has a different relation to his environment from ours... the child absorbs it. The things he sees are not just remembered; they form part of his soul. He incarnates in himself all in the world about him that his eyes see and his ears hear.

in nature everything is transformed but nothing destroyed.

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.