Everything in nature acts in conformity with law.
Art does not want the representation of a beautiful thing, but the representation of something beautiful.
But although all our knowledge begins with experience, it does not follow that it arises from experience.
The wise man can change his mind; the stubborn one, never.
Human beings are never to be treated as a means but always as ends.
The enjoyment of power inevitably corrupts the judgment of reason, and perverts its liberty.