He who thinks himself wise, O heavens! is a great fool.

Music is the pathway to the heart.

It is ourselves alone that make our days lucky or unlucky. Away, then, with a vain prejudice, the invention of the priesthood, which has been transmitted by our ancestors to an ignorant people.

Prejudices are what fools use for reason.

It is not love that should be depicted as blind, but self-love.

The mirror is a worthless invention. The only way to truly see yourself is in the reflection of someone else's eyes.

Now, you receive all your ideas; therefore you receive your wish, you wish therefore necessarily. The word "liberty" does not therefore belong in any way to your will....The will, therefore, is not a faculty that one can call free. A free will is an expression absolutely void of sense, and what the scholastics have called will of indifference, that is to say willing without cause, is a chimera unworthy of being combated.