Chaque substance est comme un monde à part, indépendant de toute autre chose, hors de Dieu... - Gottfried Wilhelm Leibniz

There is nothing in the understanding which has not come from the senses, except the understanding itself, or the one who understands.

When the origin of remote peoples goes beyond history, our languages show themselves their oldest monuments

The love of God consists in an ardent desire to procure the general welfare, and reason teaches me that there is nothing which contributes more to the general welfare of mankind than the perfection of reason.