For Kant, duty, or doing what one should do, is the key to morality. Kant believes that human beings have autonomy and that autonomy is essential for any human being to use reason to dictate morality. Therefore, everyone knows their duty and should try to do their duty. It is immoral for people to preserve life, according to their duties, but not out of duty. However, if an unfortunate man desires death and yet preserves his life, not out of inclination or fear, but out of duty, then his maxim actually has a moral content. Moreover, the Kantian theory of duty can always be traced back to the theory of the universalized maxim. According to Kant, “an action performed out of duty has its moral value not in the goal it wants to achieve, but in the maxim according to which the action is determined”. (Kant, pp12) So, in summary, an action has no moral value if it is not performed out of duty, but just because an action is performed out of duty does not necessarily mean that it has its own moral value; the maxim that determined this action must be able to become a universal law at the same time