Live your life as though your every act were to become a universal law.

The ultimate destiny of the human race is the greatest moral perfection, provided that it is achieved through human freedom, whereby alone man is capable of the greatest happiness.

Melancholy characterizes those with a superb sense of the sublime.

Look closely. The beautiful may be small.

Suicide is not abominable because God prohibits it; God prohibits it because it is abominable.

Metaphysics is a dark ocean without shores or lighthouse, strewn with many a philosophic wreck.

A man who has tasted with profound enjoyment the pleasure of agreeable society will eat with a greater appetite than he who rode horseback for two hours. An amusing lecture is as useful for health as the exercise of the body.