One test of the correctness of educational procedure is the happiness of the child.

The child who concentrates is immensely happy.

The selfsame procedure which zoology, a branch of the natural sciences, applies to the study of animals, anthropology must apply to the study of man; and by doing so, it enrolls itself as a science in the field of nature.

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

When you have solved the problem of controlling the attention of the child, you have solved the entire problem of its education.

It is not true that I invented what is called the Montessori Method... I have studied the child; I have taken what the child has given me and expressed it, and that is what is called the Montessori Method.