The characteristic of children under 6 years of age is that it is almost impossible to teach them; children of this age cannot take from a teacher. Therefore they are considered to be too young to go to school and therefore education does not begin until 6 years of age. Another characteristic of this age is that the children know and understand a great deal. They are full of knowledge. This would seem to be a contradiction, but the truth is that these children must take knowledge by themselves from the environment.
~ The Child, Society and the World