To renounce liberty is to renounce being a man, to surrender the rights of humanity and even its duties.

There exists one book, which, to my taste, furnishes the happiest treatise of natural education. What then is this marvelous book? Is it Aristotle? Is it Pliny, is it Buffon? No-it is Robinson Crusoe.

I only see clearly what I remember.

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

At first we will only skim the surface of the earth like young starlings, but soon, emboldened by practice and experience, we will spring into the air with the impetuousness of the eagle, diverting ourselves by watching the childish behavior of the little men or awling miserably around on the earth below us.

Temperance and labor are the two best physicians of man; labor sharpens the appetite, and temperance prevents from indulging to excess

A child who passes through many hands in turn, can never be well brought up. At every change he makes a secret comparison, which continually tends to lessen his respect for those who control him, and with it their authority over him. If once he thinks there are grown-up people with no more sense than children the authority of age is destroyed and his education is ruined.