Quotes on Categorical Imperative

He who is cruel to animals becomes hard also in his dealings with men. We can judge the heart of a man by his treatment of animals.

My conscience is informed by reason. It's like Kant's categorical imperative: behave to others as you would wish they behaved to you.

Immaturity is the incapacity to use one's intelligence without the guidance of another.

Act only according to that maxim whereby you can at the same time will that it should become a universal law.

Experience without theory is blind, but theory without experience is mere intellectual play.

All our knowledge begins with the senses, proceeds then to the understanding, and ends with reason. There is nothing higher than reason.

Always recognize that human individuals are ends, and do not use them as means to your end.

Two things awe me most, the starry sky above me and the moral law within me.