When the word "obligations" is involved, we have to speak about the Categorical imperative. In that sense: Formula of Universality and the Law of Nature - Perfect and Imperfect duty.; Formula of Humanity: Act in such a way that you treat humanity, whether in your own person or in the person of any other, never merely as a means to an end, but always at the same time as an end.; Formula of Autonomy: Thus the third practical principle follows [from the first two] as the ultimate condition of their harmony with practical reason: the idea of the will of every rational being as a universally legislating will.

Some of the applications: Deception, Theft, Suicide,Laziness, Charity, Cruelty to animals

At the heart of ethics is a concern about something or someone other than ourselves and our own desires and self-interest. Ethics is concerned with other people's interests, with the interests of society, with God's interests, with "ultimate goods", and so on. So when a person 'thinks ethically' they are giving at least some thought to something beyond themselves.

Ethics is not only about the morality of particular courses of action, but it's also about the goodness of individuals and what it means to live a good life. Virtue Ethics is particularly concerned with the moral character of human beings.