Enthusiasm is always connected with the senses, whatever be the object that excites it. The true strength of virtue is serenity of mind, combined with a deliberate and steadfast determination to execute her laws. That is the healthful condition of the moral life; on the other hand, enthusiasm, even when excited by representations of goodness, is a brilliant but feverish glow which leaves only exhaustion and languor behind.

Notion without intuition is empty, intuition without notion is blind.

I learned to honor human beings, and I would find myself far more useless than the common laborer if I did not believe that this consideration could impart to all others a value establishing the rights of humanity.

The death of dogma is the birth of morality.

Man must be disciplined, for he is by nature raw and wild.

Art does not want the representation of a beautiful thing, but the representation of something beautiful.

Thoughts without content are empty, intuitions without concepts are blind.