Teach your scholar to observe the phenomena of nature; you will soon rouse his curiosity, but if you would have it grow, do not be in too great a hurry to satisfy this curiosity. Put the problems before him and let him solve them himself. Let him know nothing because you have told him, but because he has learnt it for himself. Let him not be taught science, let him discover it. If ever you substitute authority for reason he will cease to reason; he will be a mere plaything of other people's thoughts.

Provided a man is not mad, he can be cured of every folly but vanity.

Every free action has two causes that come together to produce it. One is moral, the will that determines the act; the other is physical, the power that executes the will to act.

The more humanity owes him, the more society denies him. Every door is shut against him, even when he has a right to its being opened: and if he ever obtains justice, it is with much greater difficulty than others obtain favors.

God made me and broke the mold.

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.

In truth, laws are always useful to those with possessions and harmful to those who have nothing; from which it follows that the social state is advantageous to men only when all possess something and none has too much.