Whatever may be our natural talents, the art of writing is not acquired all at once.

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

In Genoa, the word, libertas can be read on the front of prisons and on the fetters of galley-slaves. The application of this motto is fine and just.

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

We should not teach children the sciences; but give them a taste for them.

Reading, solitude, idleness, a soft and sedentary life, intercourse with women and young people, these are perilous paths for a young man, and these lead him constantly into danger.

Whoever refuses to obey the general will will be forced to do so by the entire body; this means merely that he will be forced to be free.