Always treat people as ends in themselves, never as means to an end.
All trades, arts, and handiworks have gained by division of labor... Where the different kinds of work are not distinguished and divided, where everyone is a jack-of-all-trades, there manufactures remain still in the greatest barbarism.
He who has made great moral progress ceases to pray
We can judge the heart of a man by his treatment of animals.
Live your life as though your every act were to become a universal law.
Happiness, though an indefinite concept, is the goal of all rational beings