Deontological ethics is also known as normative ethical which bases morality of an action and its devotion to a rule. Kant’s theory determines whether and action is either “just” or “unjust” without regarding a consequence from an action. He also believes that the only good thing in the world is good will, a will that is consistently being acted upon by duty. To back up Kant’s moral theory he uses categorical imperative. “Act only per maxim by which you can at the same time will that it should become a universal law”. Kant argues that an action is right or wrong whether it is done in a sense of duty. Arguing that an action is not only justified from one’s happiness. He also believes that no action should be acted upon if it is not acceptable as a universal law. One man’s actions cannot be justified to all men. Understanding that the duty of an action must be respected by the universal law, but Believing that you should do the right things whether it brings you happiness or not is the idea of a moral action.