Nature wants children to be children before men... Childhood has its own seeing, thinking and feeling.

Universal silence is taken to imply the consent of the people.

With children use force; with men reason; such is the natural order of things. The wise man requires no law.

The world of reality has its limits; the world of imagination is boundless.

Chemistry... is like the maid occupied with daily civilisation; she is busy with fertilisers, medicines, glass, insecticides ... for she dispenses the recipes.

We cannot teach children the danger of telling lies to men without realising, on the man's part, the danger of telling lies to children. A single untruth on the part of the master will destroy the results of his education.

I have suffered too much in this world not to hope for another.