The child is the spiritual builder of mankind, and obstacles to his free development are the stones in the wall by which the soul of man has become imprisoned.

The teacher must derive not only the capacity, but the desire, to observe natural phenomena. The teacher must understand and feel her position of observer: the activity must lie in the phenomenon.

At one year of age the child says his first intentional wordhis babbling has a purpose, and this intention is a proof of conscious intelligenceHe becomes ever more aware that language refers to his surroundings, and his wish to master it consciously becomes also greater.Subconsciously and unaided, he strains himself to learn, and this effort makes his success all the more astonishing.

A humankind abandoned in its earlier formative stage becomes its own greatest threat to survival.

Work is necessary; it can be nothing less than a passion; a person is happy in accomplishment.

It is well to cultivate a friendly feeling towards error, to treat it as a companion inseparable from our lives, as something having a purpose, which it truly has.

First the education of the senses, then the education of the intellect.