For Kant, duty – that is, doing what one ought to do – is the key to morality. Kant believes that humans are autonomous and that autonomy is essential for any human being to use reason to dictate their morality. Therefore, everyone knows their duty and must try to do their duty. It is immoral for people to preserve their lives, in accordance with their duties, and not out of duty. But if an unfortunate person wishes death and yet preserves his life, not from inclination or fear, but from duty, then his maxim does indeed have a moral content. Moreover, Kant's theory of duty always goes back to the theory of the universalized maxim. According to Kant, “An action performed out of duty has its moral value, not in the end which it must achieve, but in the maxim according to which the action is determined.” (Kant, pp12) Therefore, to summarize, an action has no moral value if it is not done out of duty, but just because an action is done out of duty does not necessarily mean it has its moral value; the maxim which determined this action must at the same time be able to become a universal law of