Conventions which camouflage a man's true feelings are a spiritual lie which help him adapt himself to the organized deviations of society.

Nothing is created or destroyed in nature.

He does it with his hands, by experience, first in play and then through work. The hands are the instruments of man's intelligence.

A child in his earliest years, when he is only two or a little more, is capable of tremendous achievements simply through his unconscious power of absorption, though he is himself still immobile. After the age of three he is able to acquire a great number of concepts through his own efforts in exploring his surroundings. In this period he lays hold of things through his own activity and assimilates them into his mind.

Love and the hope of it are not things one can learn; they are a part of life's heritage.

Children are not only sensitive to silence, but also to a voice which calls them ... Out of that silence.

Learning to speak, therefore, and the power it brings of intelligent converse with others, is a most impressive further step along the path of independence ... Learning to walk is especially significant, not only because it is supremely complex, but because it is done in the first year of life.